Home / 107,724.72-161,336.28-103,987.92

Finding the Fourth Proportional to 107,724.72, 161,336.28 and 103,987.92

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Solution

The fourth proportional to 107,724.72, 161,336.28 and 103,987.92 is: 155,739.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,724.72 : 161,336.28 = 103,987.92 : x
  2. Step 2: Convert to fraction form
    107,724.72/161,336.28 = 103,987.92/x
  3. Step 3: Cross multiply
    107,724.72x = 161,336.28 × 103,987.92
  4. Step 4: Simplify right side
    107,724.72x = 16,777,024,177.74
  5. Step 5: Solve for x
    x = 16,777,024,177.74/107,724.72
  6. Step 6: Final answer
    x = 155,739.78

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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.