Finding the Fourth Proportional to 136,129.20, 187,414.20 and 107,396.88
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Solution
The fourth proportional to 136,129.20, 187,414.20 and 107,396.88 is: 147,857.33
Step by Step Solution
- Step 1: Write the proportion equation
136,129.20 : 187,414.20 = 107,396.88 : x - Step 2: Convert to fraction form
136,129.20/187,414.20 = 107,396.88/x - Step 3: Cross multiply
136,129.20x = 187,414.20 × 107,396.88 - Step 4: Simplify right side
136,129.20x = 20,127,700,347.70 - Step 5: Solve for x
x = 20,127,700,347.70/136,129.20 - Step 6: Final answer
x = 147,857.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.