Finding the Fourth Proportional to 129,129,905.20, 193,694,857.80 and 47,248,625.20
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Solution
The fourth proportional to 129,129,905.20, 193,694,857.80 and 47,248,625.20 is: 70,872,937.80
Step by Step Solution
- Step 1: Write the proportion equation
129,129,905.20 : 193,694,857.80 = 47,248,625.20 : x - Step 2: Convert to fraction form
129,129,905.20/193,694,857.80 = 47,248,625.20/x - Step 3: Cross multiply
129,129,905.20x = 193,694,857.80 × 47,248,625.20 - Step 4: Simplify right side
129,129,905.20x = 9,151,815,739,359,498 - Step 5: Solve for x
x = 9,151,815,739,359,498/129,129,905.20 - Step 6: Final answer
x = 70,872,937.80
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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.