Finding the Fourth Proportional to 100,737.09, 138,981.46 and 62,457.08
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Solution
The fourth proportional to 100,737.09, 138,981.46 and 62,457.08 is: 86,168.61
Step by Step Solution
- Step 1: Write the proportion equation
100,737.09 : 138,981.46 = 62,457.08 : x - Step 2: Convert to fraction form
100,737.09/138,981.46 = 62,457.08/x - Step 3: Cross multiply
100,737.09x = 138,981.46 × 62,457.08 - Step 4: Simplify right side
100,737.09x = 8,680,375,343.96 - Step 5: Solve for x
x = 8,680,375,343.96/100,737.09 - Step 6: Final answer
x = 86,168.61
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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.