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Finding the Fourth Proportional to 110.80, 166.29 and 38.71

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Solution

The fourth proportional to 110.80, 166.29 and 38.71 is: 58.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.80 : 166.29 = 38.71 : x
  2. Step 2: Convert to fraction form
    110.80/166.29 = 38.71/x
  3. Step 3: Cross multiply
    110.80x = 166.29 × 38.71
  4. Step 4: Simplify right side
    110.80x = 6,437.09
  5. Step 5: Solve for x
    x = 6,437.09/110.80
  6. Step 6: Final answer
    x = 58.10

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