Finding the Fourth Proportional to 129,938.90, 194,908.35 and 63,421.70
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Solution
The fourth proportional to 129,938.90, 194,908.35 and 63,421.70 is: 95,132.55
Step by Step Solution
- Step 1: Write the proportion equation
129,938.90 : 194,908.35 = 63,421.70 : x - Step 2: Convert to fraction form
129,938.90/194,908.35 = 63,421.70/x - Step 3: Cross multiply
129,938.90x = 194,908.35 × 63,421.70 - Step 4: Simplify right side
129,938.90x = 12,361,418,901.20 - Step 5: Solve for x
x = 12,361,418,901.20/129,938.90 - Step 6: Final answer
x = 95,132.55
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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.