Finding the Fourth Proportional to 129,024,452.80, 193,536,679.20 and 115,886,123.20
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Solution
The fourth proportional to 129,024,452.80, 193,536,679.20 and 115,886,123.20 is: 173,829,184.80
Step by Step Solution
- Step 1: Write the proportion equation
129,024,452.80 : 193,536,679.20 = 115,886,123.20 : x - Step 2: Convert to fraction form
129,024,452.80/193,536,679.20 = 115,886,123.20/x - Step 3: Cross multiply
129,024,452.80x = 193,536,679.20 × 115,886,123.20 - Step 4: Simplify right side
129,024,452.80x = 22,428,215,449,490,076 - Step 5: Solve for x
x = 22,428,215,449,490,076/129,024,452.80 - Step 6: Final answer
x = 173,829,184.80
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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.