Home / 115,158.28-172,723.66-40,272.68

Finding the Fourth Proportional to 115,158.28, 172,723.66 and 40,272.68

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Solution

The fourth proportional to 115,158.28, 172,723.66 and 40,272.68 is: 60,404.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,158.28 : 172,723.66 = 40,272.68 : x
  2. Step 2: Convert to fraction form
    115,158.28/172,723.66 = 40,272.68/x
  3. Step 3: Cross multiply
    115,158.28x = 172,723.66 × 40,272.68
  4. Step 4: Simplify right side
    115,158.28x = 6,956,044,687.61
  5. Step 5: Solve for x
    x = 6,956,044,687.61/115,158.28
  6. Step 6: Final answer
    x = 60,404.21

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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.