Finding the Fourth Proportional to 99,681,715.20, 149,522,572.80 and 86,244,787.20
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Solution
The fourth proportional to 99,681,715.20, 149,522,572.80 and 86,244,787.20 is: 129,367,180.80
Step by Step Solution
- Step 1: Write the proportion equation
99,681,715.20 : 149,522,572.80 = 86,244,787.20 : x - Step 2: Convert to fraction form
99,681,715.20/149,522,572.80 = 86,244,787.20/x - Step 3: Cross multiply
99,681,715.20x = 149,522,572.80 × 86,244,787.20 - Step 4: Simplify right side
99,681,715.20x = 12,895,542,472,732,510 - Step 5: Solve for x
x = 12,895,542,472,732,510/99,681,715.20 - Step 6: Final answer
x = 129,367,180.80
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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.