Home / 127,708.38-176,238.72-71,120.88

Finding the Fourth Proportional to 127,708.38, 176,238.72 and 71,120.88

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Solution

The fourth proportional to 127,708.38, 176,238.72 and 71,120.88 is: 98,147.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,708.38 : 176,238.72 = 71,120.88 : x
  2. Step 2: Convert to fraction form
    127,708.38/176,238.72 = 71,120.88/x
  3. Step 3: Cross multiply
    127,708.38x = 176,238.72 × 71,120.88
  4. Step 4: Simplify right side
    127,708.38x = 12,534,252,856.47
  5. Step 5: Solve for x
    x = 12,534,252,856.47/127,708.38
  6. Step 6: Final answer
    x = 98,147.46

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1.5x scale

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.