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Finding the Fourth Proportional to 203,390.64, 280,665.72 and 113,949.36

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Solution

The fourth proportional to 203,390.64, 280,665.72 and 113,949.36 is: 157,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,390.64 : 280,665.72 = 113,949.36 : x
  2. Step 2: Convert to fraction form
    203,390.64/280,665.72 = 113,949.36/x
  3. Step 3: Cross multiply
    203,390.64x = 280,665.72 × 113,949.36
  4. Step 4: Simplify right side
    203,390.64x = 31,981,679,167.94
  5. Step 5: Solve for x
    x = 31,981,679,167.94/203,390.64
  6. Step 6: Final answer
    x = 157,242.63

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