Finding the Fourth Proportional to 88,178,213.20, 121,506,630.75 and 68,210,724.52
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Solution
The fourth proportional to 88,178,213.20, 121,506,630.75 and 68,210,724.52 is: 93,992,098.69
Step by Step Solution
- Step 1: Write the proportion equation
88,178,213.20 : 121,506,630.75 = 68,210,724.52 : x - Step 2: Convert to fraction form
88,178,213.20/121,506,630.75 = 68,210,724.52/x - Step 3: Cross multiply
88,178,213.20x = 121,506,630.75 × 68,210,724.52 - Step 4: Simplify right side
88,178,213.20x = 8,288,055,317,443,732 - Step 5: Solve for x
x = 8,288,055,317,443,732/88,178,213.20 - Step 6: Final answer
x = 93,992,098.69
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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.