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Finding the Fourth Proportional to 128,910.44, 177,898.32 and 71,553.48

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Solution

The fourth proportional to 128,910.44, 177,898.32 and 71,553.48 is: 98,744.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,910.44 : 177,898.32 = 71,553.48 : x
  2. Step 2: Convert to fraction form
    128,910.44/177,898.32 = 71,553.48/x
  3. Step 3: Cross multiply
    128,910.44x = 177,898.32 × 71,553.48
  4. Step 4: Simplify right side
    128,910.44x = 12,729,243,882.15
  5. Step 5: Solve for x
    x = 12,729,243,882.15/128,910.44
  6. Step 6: Final answer
    x = 98,744.86

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