Finding the Fourth Proportional to 155,060,438.12, 213,984,839.70 and 85,448,310.20
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Solution
The fourth proportional to 155,060,438.12, 213,984,839.70 and 85,448,310.20 is: 117,919,458.91
Step by Step Solution
- Step 1: Write the proportion equation
155,060,438.12 : 213,984,839.70 = 85,448,310.20 : x - Step 2: Convert to fraction form
155,060,438.12/213,984,839.70 = 85,448,310.20/x - Step 3: Cross multiply
155,060,438.12x = 213,984,839.70 × 85,448,310.20 - Step 4: Simplify right side
155,060,438.12x = 18,284,642,960,782,876 - Step 5: Solve for x
x = 18,284,642,960,782,876/155,060,438.12 - Step 6: Final answer
x = 117,919,458.91
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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.