Finding the Fourth Proportional to 100,812.92, 139,120.71 and 55,489.92
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Solution
The fourth proportional to 100,812.92, 139,120.71 and 55,489.92 is: 76,575.48
Step by Step Solution
- Step 1: Write the proportion equation
100,812.92 : 139,120.71 = 55,489.92 : x - Step 2: Convert to fraction form
100,812.92/139,120.71 = 55,489.92/x - Step 3: Cross multiply
100,812.92x = 139,120.71 × 55,489.92 - Step 4: Simplify right side
100,812.92x = 7,719,797,068.24 - Step 5: Solve for x
x = 7,719,797,068.24/100,812.92 - Step 6: Final answer
x = 76,575.48
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1.5x scale
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.