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Finding the Fourth Proportional to 122.76, 183.99 and 54.24

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Solution

The fourth proportional to 122.76, 183.99 and 54.24 is: 81.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.76 : 183.99 = 54.24 : x
  2. Step 2: Convert to fraction form
    122.76/183.99 = 54.24/x
  3. Step 3: Cross multiply
    122.76x = 183.99 × 54.24
  4. Step 4: Simplify right side
    122.76x = 9,979.62
  5. Step 5: Solve for x
    x = 9,979.62/122.76
  6. Step 6: Final answer
    x = 81.29

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