Home / 130,939.92-180,766.17-88,144.47

Finding the Fourth Proportional to 130,939.92, 180,766.17 and 88,144.47

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Solution

The fourth proportional to 130,939.92, 180,766.17 and 88,144.47 is: 121,685.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,939.92 : 180,766.17 = 88,144.47 : x
  2. Step 2: Convert to fraction form
    130,939.92/180,766.17 = 88,144.47/x
  3. Step 3: Cross multiply
    130,939.92x = 180,766.17 × 88,144.47
  4. Step 4: Simplify right side
    130,939.92x = 15,933,538,248.58
  5. Step 5: Solve for x
    x = 15,933,538,248.58/130,939.92
  6. Step 6: Final answer
    x = 121,685.87

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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.