Finding the Fourth Proportional to 127,721.23, 176,255.30 and 71,132.60
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Solution
The fourth proportional to 127,721.23, 176,255.30 and 71,132.60 is: 98,162.99
Step by Step Solution
- Step 1: Write the proportion equation
127,721.23 : 176,255.30 = 71,132.60 : x - Step 2: Convert to fraction form
127,721.23/176,255.30 = 71,132.60/x - Step 3: Cross multiply
127,721.23x = 176,255.30 × 71,132.60 - Step 4: Simplify right side
127,721.23x = 12,537,497,752.78 - Step 5: Solve for x
x = 12,537,497,752.78/127,721.23 - Step 6: Final answer
x = 98,162.99
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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.