Finding the Fourth Proportional to 135,989.20, 203,775.90 and 91,451.08
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Solution
The fourth proportional to 135,989.20, 203,775.90 and 91,451.08 is: 137,036.81
Step by Step Solution
- Step 1: Write the proportion equation
135,989.20 : 203,775.90 = 91,451.08 : x - Step 2: Convert to fraction form
135,989.20/203,775.90 = 91,451.08/x - Step 3: Cross multiply
135,989.20x = 203,775.90 × 91,451.08 - Step 4: Simplify right side
135,989.20x = 18,635,526,132.97 - Step 5: Solve for x
x = 18,635,526,132.97/135,989.20 - Step 6: Final answer
x = 137,036.81
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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.