Home / 115,431.11-173,160.46-109,132.55

Finding the Fourth Proportional to 115,431.11, 173,160.46 and 109,132.55

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Solution

The fourth proportional to 115,431.11, 173,160.46 and 109,132.55 is: 163,711.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,431.11 : 173,160.46 = 109,132.55 : x
  2. Step 2: Convert to fraction form
    115,431.11/173,160.46 = 109,132.55/x
  3. Step 3: Cross multiply
    115,431.11x = 173,160.46 × 109,132.55
  4. Step 4: Simplify right side
    115,431.11x = 18,897,442,558.97
  5. Step 5: Solve for x
    x = 18,897,442,558.97/115,431.11
  6. Step 6: Final answer
    x = 163,711.87

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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.