Finding the Fourth Proportional to 135,240.80, 202,861.20 and 68,691.20
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Solution
The fourth proportional to 135,240.80, 202,861.20 and 68,691.20 is: 103,036.80
Step by Step Solution
- Step 1: Write the proportion equation
135,240.80 : 202,861.20 = 68,691.20 : x - Step 2: Convert to fraction form
135,240.80/202,861.20 = 68,691.20/x - Step 3: Cross multiply
135,240.80x = 202,861.20 × 68,691.20 - Step 4: Simplify right side
135,240.80x = 13,934,779,261.44 - Step 5: Solve for x
x = 13,934,779,261.44/135,240.80 - Step 6: Final answer
x = 103,036.80
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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.