What is 1/16 plus 4/9? (Answer: 73/144)

Exact Answer

==================================================
Problem: What is 1/16 plus 4/9?
Formula / Expression: 1/16 + 4/9
Final Answer: 73/144
==================================================

Step-by-Step Solution:

Step 1: Find the Least Common Denominator (LCD)
The denominators 16 and 9 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 16 × 9 = 144.
Working: LCD(16, 9) = 144

Step 2: Convert to Equivalent Fractions with Common Denominator 144
Multiply the numerator and denominator of 1/16 by 9, and multiply the numerator and denominator of 4/9 by 16 so both fractions share the common base 144.
Working: 1 × 9/16 × 9 = 9/144 and 4 × 16/9 × 16 = 64/144

Step 3: Add the Numerators
Now add the numerators (9 + 64 = 73) and keep the common denominator 144 unchanged.
Working: 9 + 64/144 = 73/144

Step 4: Check if the Fraction Can Be Simplified
The Greatest Common Divisor (GCD) of 73 and 144 is 1, confirming that 73/144 cannot be reduced further—it is already in its simplest irreducible form.
Working: 73/144

Step 5: Decimal & Percentage Representation
Dividing the numerator 73 by denominator 144 produces a repeating decimal (approximately 0.506944, or 50.6944%).
Working: 73 ÷ 144 = 0.506944 (50.6944%)

Key Values:
- Simplified Fraction: 73/144
- Mixed Number Form: 73/144
- Decimal Value: 0.506944
- Percentage: 50.6944%

--------------------------------------------------
Solved with FractionsCalc:
https://fractionscalc.com/what-is-1-16-plus-4-9/
==================================================

1/16 + 4/9 = 73/144

Simplified Fraction

73/144

Mixed Number

Proper (73/144)

Decimal Value

0.506944

Percentage

50.6944%

Reduce / Convert Fraction:

Convert Fraction:

Enter Decimal Number:

Enter Percentage: %

What is % of

From Value: To Value:

Simplify Ratio: :

Switch to Proportion / Missing X Solver (A/B = C/D) →

Enter 3 known numbers and leave 1 empty (or type x) to solve:

← Switch to Ratio Simplifier (A:B)

Provide any 2 values below to calculate the remaining:

Price before discount

Discount

Price after discount

You saved

+ Add Sales Tax & Extra Coupon (Optional)

Sales Tax: % Extra Off: %

Provide any 2 values below to calculate the remaining:

Cost

Markup

REVENUE

Gross Profit

Profit Margin

Bill Subtotal

Tip Percentage

Split (People)

👥

Quick Tip:

Total Bill

Split Between

👥

Tip % (Optional)

Include Tip:

Total Price

Quantity

Unit of Measure

← Discount & Sales Tax • Ratio Simplifier (A:B) →

First Number: Second Number:

Find All Factors of:

Dividend: ÷ Divisor:

Number to Round: To Nearest:

Method: Standard (5+ ↑) Always Up (Ceil) Always Down (Floor)

Presets:

√ Square Root of: OR Power (x^y): ^{^}

x² + x + = 0

Number (n! & log):

Circle Radius (r):

Side a: Side b:

Angle (Degrees): °

Numbers (comma separated):

Total Items (n): Choose (r):

Decimal Number:

Number (1–3999):

Step-by-Step Solution: 1/16 + 4/9

Step 1

Find the Least Common Denominator (LCD)

The denominators 16 and 9 are coprime (they share no common factors other than 1). Therefore, their Least Common Denominator (LCD) is simply their direct product: 16 × 9 = 144.

LCD(16, 9) = 144

Step 2

Convert to Equivalent Fractions with Common Denominator 144

Multiply the numerator and denominator of 1/16 by 9, and multiply the numerator and denominator of 4/9 by 16 so both fractions share the common base 144.

1 × 9/16 × 9 = 9/144 and 4 × 16/9 × 16 = 64/144

Step 3

Add the Numerators

Now add the numerators (9 + 64 = 73) and keep the common denominator 144 unchanged.

9 + 64/144 = 73/144

Step 4

Check if the Fraction Can Be Simplified

The Greatest Common Divisor (GCD) of 73 and 144 is 1, confirming that 73/144 cannot be reduced further—it is already in its simplest irreducible form.

73/144

Step 5

Decimal & Percentage Representation

Dividing the numerator 73 by denominator 144 produces a repeating decimal (approximately 0.506944, or 50.6944%).

73 ÷ 144 = 0.506944 (50.6944%)

Visual Representation

The diagram below illustrates 1/16 plus 4/9 visually:

Summary & Alternative Representations

Property / Format	Value
Lowest Terms Fraction	`73/144`
Mixed Number Form	`73/144`
Decimal Form	`0.506944`
Percentage	`50.6944%`

Was this solution helpful?

Help us improve our free step-by-step tools

Frequently Asked Questions

What is 1/16 plus 4/9 as a fraction?

1/16 + 4/9 in simplest fraction form is 73/144.

What is 1/16 plus 4/9 as a decimal?

1/16 + 4/9 converted to a decimal is 0.506944.

What is 1/16 plus 4/9 as a percentage?

1/16 + 4/9 expressed as a percentage is 50.6944%.

Does 1/16 plus 4/9 result in a terminating or repeating decimal?

It results in a repeating decimal (approximately 0.506944...) because the denominator contains prime factors other than 2 and 5.