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Finding the Fourth Proportional to 98,138.88, 135,472.28 and 66,350.88

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Solution

The fourth proportional to 98,138.88, 135,472.28 and 66,350.88 is: 91,591.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,138.88 : 135,472.28 = 66,350.88 : x
  2. Step 2: Convert to fraction form
    98,138.88/135,472.28 = 66,350.88/x
  3. Step 3: Cross multiply
    98,138.88x = 135,472.28 × 66,350.88
  4. Step 4: Simplify right side
    98,138.88x = 8,988,704,993.61
  5. Step 5: Solve for x
    x = 8,988,704,993.61/98,138.88
  6. Step 6: Final answer
    x = 91,591.68

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