Finding the Fourth Proportional to 136,343.20, 203,419.64 and 121,374.40
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Solution
The fourth proportional to 136,343.20, 203,419.64 and 121,374.40 is: 181,086.68
Step by Step Solution
- Step 1: Write the proportion equation
136,343.20 : 203,419.64 = 121,374.40 : x - Step 2: Convert to fraction form
136,343.20/203,419.64 = 121,374.40/x - Step 3: Cross multiply
136,343.20x = 203,419.64 × 121,374.40 - Step 4: Simplify right side
136,343.20x = 24,689,936,753.22 - Step 5: Solve for x
x = 24,689,936,753.22/136,343.20 - Step 6: Final answer
x = 181,086.68
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.