Finding the Fourth Proportional to 129,534.10, 194,301.15 and 74,135.70
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Solution
The fourth proportional to 129,534.10, 194,301.15 and 74,135.70 is: 111,203.55
Step by Step Solution
- Step 1: Write the proportion equation
129,534.10 : 194,301.15 = 74,135.70 : x - Step 2: Convert to fraction form
129,534.10/194,301.15 = 74,135.70/x - Step 3: Cross multiply
129,534.10x = 194,301.15 × 74,135.70 - Step 4: Simplify right side
129,534.10x = 14,404,651,766.06 - Step 5: Solve for x
x = 14,404,651,766.06/129,534.10 - Step 6: Final answer
x = 111,203.55
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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.