Finding the Fourth Proportional to 129,452,589.71, 194,177,553.83 and 74,830,419.12
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Solution
The fourth proportional to 129,452,589.71, 194,177,553.83 and 74,830,419.12 is: 112,244,859.45
Step by Step Solution
- Step 1: Write the proportion equation
129,452,589.71 : 194,177,553.83 = 74,830,419.12 : x - Step 2: Convert to fraction form
129,452,589.71/194,177,553.83 = 74,830,419.12/x - Step 3: Cross multiply
129,452,589.71x = 194,177,553.83 × 74,830,419.12 - Step 4: Simplify right side
129,452,589.71x = 14,530,387,736,795,264 - Step 5: Solve for x
x = 14,530,387,736,795,264/129,452,589.71 - Step 6: Final answer
x = 112,244,859.45
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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.