Finding the Fourth Proportional to 138,343.20, 207,514.80 and 132,511.20
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Solution
The fourth proportional to 138,343.20, 207,514.80 and 132,511.20 is: 198,766.80
Step by Step Solution
- Step 1: Write the proportion equation
138,343.20 : 207,514.80 = 132,511.20 : x - Step 2: Convert to fraction form
138,343.20/207,514.80 = 132,511.20/x - Step 3: Cross multiply
138,343.20x = 207,514.80 × 132,511.20 - Step 4: Simplify right side
138,343.20x = 27,498,035,165.76 - Step 5: Solve for x
x = 27,498,035,165.76/138,343.20 - Step 6: Final answer
x = 198,766.80
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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.