Finding the Fourth Proportional to 128,575.92, 192,531.60 and 88,717.80
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Solution
The fourth proportional to 128,575.92, 192,531.60 and 88,717.80 is: 132,847.43
Step by Step Solution
- Step 1: Write the proportion equation
128,575.92 : 192,531.60 = 88,717.80 : x - Step 2: Convert to fraction form
128,575.92/192,531.60 = 88,717.80/x - Step 3: Cross multiply
128,575.92x = 192,531.60 × 88,717.80 - Step 4: Simplify right side
128,575.92x = 17,080,979,982.48 - Step 5: Solve for x
x = 17,080,979,982.48/128,575.92 - Step 6: Final answer
x = 132,847.43
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1.5x scale
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.