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Finding the Fourth Proportional to 133,947.10, 200,629.05 and 81,264.70

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Solution

The fourth proportional to 133,947.10, 200,629.05 and 81,264.70 is: 121,720.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,947.10 : 200,629.05 = 81,264.70 : x
  2. Step 2: Convert to fraction form
    133,947.10/200,629.05 = 81,264.70/x
  3. Step 3: Cross multiply
    133,947.10x = 200,629.05 × 81,264.70
  4. Step 4: Simplify right side
    133,947.10x = 16,304,059,559.54
  5. Step 5: Solve for x
    x = 16,304,059,559.54/133,947.10
  6. Step 6: Final answer
    x = 121,720.14

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