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Finding the Fourth Proportional to 92,310.60, 138,356.55 and 68,909.70

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Solution

The fourth proportional to 92,310.60, 138,356.55 and 68,909.70 is: 103,282.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,310.60 : 138,356.55 = 68,909.70 : x
  2. Step 2: Convert to fraction form
    92,310.60/138,356.55 = 68,909.70/x
  3. Step 3: Cross multiply
    92,310.60x = 138,356.55 × 68,909.70
  4. Step 4: Simplify right side
    92,310.60x = 9,534,108,353.54
  5. Step 5: Solve for x
    x = 9,534,108,353.54/92,310.60
  6. Step 6: Final answer
    x = 103,282.92

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