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Finding the Fourth Proportional to 121,372.53, 167,565.85 and 107,906.52

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Solution

The fourth proportional to 121,372.53, 167,565.85 and 107,906.52 is: 148,974.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,372.53 : 167,565.85 = 107,906.52 : x
  2. Step 2: Convert to fraction form
    121,372.53/167,565.85 = 107,906.52/x
  3. Step 3: Cross multiply
    121,372.53x = 167,565.85 × 107,906.52
  4. Step 4: Simplify right side
    121,372.53x = 18,081,447,474.58
  5. Step 5: Solve for x
    x = 18,081,447,474.58/121,372.53
  6. Step 6: Final answer
    x = 148,974.79

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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.