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Finding the Fourth Proportional to 149,865, 206,819.64 and 86,202.72

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Solution

The fourth proportional to 149,865, 206,819.64 and 86,202.72 is: 118,963.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,865 : 206,819.64 = 86,202.72 : x
  2. Step 2: Convert to fraction form
    149,865/206,819.64 = 86,202.72/x
  3. Step 3: Cross multiply
    149,865x = 206,819.64 × 86,202.72
  4. Step 4: Simplify right side
    149,865x = 17,828,415,517.42
  5. Step 5: Solve for x
    x = 17,828,415,517.42/149,865
  6. Step 6: Final answer
    x = 118,963.17

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