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Finding the Fourth Proportional to 149.28, 223.59 and 114.78

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Solution

The fourth proportional to 149.28, 223.59 and 114.78 is: 171.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149.28 : 223.59 = 114.78 : x
  2. Step 2: Convert to fraction form
    149.28/223.59 = 114.78/x
  3. Step 3: Cross multiply
    149.28x = 223.59 × 114.78
  4. Step 4: Simplify right side
    149.28x = 25,664.93
  5. Step 5: Solve for x
    x = 25,664.93/149.28
  6. Step 6: Final answer
    x = 171.93

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