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Finding the Fourth Proportional to 88,684.90, 133,027.35 and 81,427.30

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Solution

The fourth proportional to 88,684.90, 133,027.35 and 81,427.30 is: 122,140.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,684.90 : 133,027.35 = 81,427.30 : x
  2. Step 2: Convert to fraction form
    88,684.90/133,027.35 = 81,427.30/x
  3. Step 3: Cross multiply
    88,684.90x = 133,027.35 × 81,427.30
  4. Step 4: Simplify right side
    88,684.90x = 10,832,057,936.66
  5. Step 5: Solve for x
    x = 10,832,057,936.66/88,684.90
  6. Step 6: Final answer
    x = 122,140.95

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