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Finding the Fourth Proportional to 111.91, 167.71 and 54.10

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Solution

The fourth proportional to 111.91, 167.71 and 54.10 is: 81.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.91 : 167.71 = 54.10 : x
  2. Step 2: Convert to fraction form
    111.91/167.71 = 54.10/x
  3. Step 3: Cross multiply
    111.91x = 167.71 × 54.10
  4. Step 4: Simplify right side
    111.91x = 9,073.11
  5. Step 5: Solve for x
    x = 9,073.11/111.91
  6. Step 6: Final answer
    x = 81.08

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