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Finding the Fourth Proportional to 149,383.49, 206,146.56 and 81,400.94

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Solution

The fourth proportional to 149,383.49, 206,146.56 and 81,400.94 is: 112,331.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,383.49 : 206,146.56 = 81,400.94 : x
  2. Step 2: Convert to fraction form
    149,383.49/206,146.56 = 81,400.94/x
  3. Step 3: Cross multiply
    149,383.49x = 206,146.56 × 81,400.94
  4. Step 4: Simplify right side
    149,383.49x = 16,780,523,761.77
  5. Step 5: Solve for x
    x = 16,780,523,761.77/149,383.49
  6. Step 6: Final answer
    x = 112,331.85

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