Finding the Fourth Proportional to 135,456.40, 202,608.60 and 121,517.20
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Solution
The fourth proportional to 135,456.40, 202,608.60 and 121,517.20 is: 181,759.07
Step by Step Solution
- Step 1: Write the proportion equation
135,456.40 : 202,608.60 = 121,517.20 : x - Step 2: Convert to fraction form
135,456.40/202,608.60 = 121,517.20/x - Step 3: Cross multiply
135,456.40x = 202,608.60 × 121,517.20 - Step 4: Simplify right side
135,456.40x = 24,620,429,767.92 - Step 5: Solve for x
x = 24,620,429,767.92/135,456.40 - Step 6: Final answer
x = 181,759.07
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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.