Finding the Fourth Proportional to 145,156,974.40, 217,436,863.20 and 73,393,825.60
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Solution
The fourth proportional to 145,156,974.40, 217,436,863.20 and 73,393,825.60 is: 109,939,761.99
Step by Step Solution
- Step 1: Write the proportion equation
145,156,974.40 : 217,436,863.20 = 73,393,825.60 : x - Step 2: Convert to fraction form
145,156,974.40/217,436,863.20 = 73,393,825.60/x - Step 3: Cross multiply
145,156,974.40x = 217,436,863.20 × 73,393,825.60 - Step 4: Simplify right side
145,156,974.40x = 15,958,523,216,711,856 - Step 5: Solve for x
x = 15,958,523,216,711,856/145,156,974.40 - Step 6: Final answer
x = 109,939,761.99
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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.