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Finding the Fourth Proportional to 122.04, 182.97 and 85.95

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Solution

The fourth proportional to 122.04, 182.97 and 85.95 is: 128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.04 : 182.97 = 85.95 : x
  2. Step 2: Convert to fraction form
    122.04/182.97 = 85.95/x
  3. Step 3: Cross multiply
    122.04x = 182.97 × 85.95
  4. Step 4: Simplify right side
    122.04x = 15,726.27
  5. Step 5: Solve for x
    x = 15,726.27/122.04
  6. Step 6: Final answer
    x = 128.86

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