Finding the Fourth Proportional to 128,350.26, 177,124.50 and 71,761.68
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Solution
The fourth proportional to 128,350.26, 177,124.50 and 71,761.68 is: 99,031.76
Step by Step Solution
- Step 1: Write the proportion equation
128,350.26 : 177,124.50 = 71,761.68 : x - Step 2: Convert to fraction form
128,350.26/177,124.50 = 71,761.68/x - Step 3: Cross multiply
128,350.26x = 177,124.50 × 71,761.68 - Step 4: Simplify right side
128,350.26x = 12,710,751,689.16 - Step 5: Solve for x
x = 12,710,751,689.16/128,350.26 - Step 6: Final answer
x = 99,031.76
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.