Finding the Fourth Proportional to 129,450.57, 194,110.92 and 75,432.75
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Solution
The fourth proportional to 129,450.57, 194,110.92 and 75,432.75 is: 113,111.28
Step by Step Solution
- Step 1: Write the proportion equation
129,450.57 : 194,110.92 = 75,432.75 : x - Step 2: Convert to fraction form
129,450.57/194,110.92 = 75,432.75/x - Step 3: Cross multiply
129,450.57x = 194,110.92 × 75,432.75 - Step 4: Simplify right side
129,450.57x = 14,642,320,217.76 - Step 5: Solve for x
x = 14,642,320,217.76/129,450.57 - Step 6: Final answer
x = 113,111.28
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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.