Home / 127,711.38-176,229.09-71,128.02

Finding the Fourth Proportional to 127,711.38, 176,229.09 and 71,128.02

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Solution

The fourth proportional to 127,711.38, 176,229.09 and 71,128.02 is: 98,149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,711.38 : 176,229.09 = 71,128.02 : x
  2. Step 2: Convert to fraction form
    127,711.38/176,229.09 = 71,128.02/x
  3. Step 3: Cross multiply
    127,711.38x = 176,229.09 × 71,128.02
  4. Step 4: Simplify right side
    127,711.38x = 12,534,826,238.10
  5. Step 5: Solve for x
    x = 12,534,826,238.10/127,711.38
  6. Step 6: Final answer
    x = 98,149.64

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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.