Home / 128,049.28-192,001.92-88,115.20

Finding the Fourth Proportional to 128,049.28, 192,001.92 and 88,115.20

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Solution

The fourth proportional to 128,049.28, 192,001.92 and 88,115.20 is: 132,123.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,049.28 : 192,001.92 = 88,115.20 : x
  2. Step 2: Convert to fraction form
    128,049.28/192,001.92 = 88,115.20/x
  3. Step 3: Cross multiply
    128,049.28x = 192,001.92 × 88,115.20
  4. Step 4: Simplify right side
    128,049.28x = 16,918,287,581.18
  5. Step 5: Solve for x
    x = 16,918,287,581.18/128,049.28
  6. Step 6: Final answer
    x = 132,123.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.