Home / 115,007.57-172,456.78-40,118.61

Finding the Fourth Proportional to 115,007.57, 172,456.78 and 40,118.61

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Solution

The fourth proportional to 115,007.57, 172,456.78 and 40,118.61 is: 60,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,007.57 : 172,456.78 = 40,118.61 : x
  2. Step 2: Convert to fraction form
    115,007.57/172,456.78 = 40,118.61/x
  3. Step 3: Cross multiply
    115,007.57x = 172,456.78 × 40,118.61
  4. Step 4: Simplify right side
    115,007.57x = 6,918,726,298.68
  5. Step 5: Solve for x
    x = 6,918,726,298.68/115,007.57
  6. Step 6: Final answer
    x = 60,158.88

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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.