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Finding the Fourth Proportional to 121,691.62, 167,743.92 and 111,915.73

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Solution

The fourth proportional to 121,691.62, 167,743.92 and 111,915.73 is: 154,268.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,691.62 : 167,743.92 = 111,915.73 : x
  2. Step 2: Convert to fraction form
    121,691.62/167,743.92 = 111,915.73/x
  3. Step 3: Cross multiply
    121,691.62x = 167,743.92 × 111,915.73
  4. Step 4: Simplify right side
    121,691.62x = 18,773,183,259.86
  5. Step 5: Solve for x
    x = 18,773,183,259.86/121,691.62
  6. Step 6: Final answer
    x = 154,268.50

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