Finding the Fourth Proportional to 135,652.20, 203,478.30 and 129,893.10
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Solution
The fourth proportional to 135,652.20, 203,478.30 and 129,893.10 is: 194,839.65
Step by Step Solution
- Step 1: Write the proportion equation
135,652.20 : 203,478.30 = 129,893.10 : x - Step 2: Convert to fraction form
135,652.20/203,478.30 = 129,893.10/x - Step 3: Cross multiply
135,652.20x = 203,478.30 × 129,893.10 - Step 4: Simplify right side
135,652.20x = 26,430,427,169.73 - Step 5: Solve for x
x = 26,430,427,169.73/135,652.20 - Step 6: Final answer
x = 194,839.65
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.