Finding the Fourth Proportional to 100,691.49, 138,919.65 and 62,437.26
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Solution
The fourth proportional to 100,691.49, 138,919.65 and 62,437.26 is: 86,141.96
Step by Step Solution
- Step 1: Write the proportion equation
100,691.49 : 138,919.65 = 62,437.26 : x - Step 2: Convert to fraction form
100,691.49/138,919.65 = 62,437.26/x - Step 3: Cross multiply
100,691.49x = 138,919.65 × 62,437.26 - Step 4: Simplify right side
100,691.49x = 8,673,762,306.16 - Step 5: Solve for x
x = 8,673,762,306.16/100,691.49 - Step 6: Final answer
x = 86,141.96
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.