Home / 127,717.49-176,255.60-71,128.86

Finding the Fourth Proportional to 127,717.49, 176,255.60 and 71,128.86

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Solution

The fourth proportional to 127,717.49, 176,255.60 and 71,128.86 is: 98,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,717.49 : 176,255.60 = 71,128.86 : x
  2. Step 2: Convert to fraction form
    127,717.49/176,255.60 = 71,128.86/x
  3. Step 3: Cross multiply
    127,717.49x = 176,255.60 × 71,128.86
  4. Step 4: Simplify right side
    127,717.49x = 12,536,859,540.97
  5. Step 5: Solve for x
    x = 12,536,859,540.97/127,717.49
  6. Step 6: Final answer
    x = 98,160.87

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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.