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Finding the Fourth Proportional to 118, 162.79 and 82.97

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Solution

The fourth proportional to 118, 162.79 and 82.97 is: 114.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    118 : 162.79 = 82.97 : x
  2. Step 2: Convert to fraction form
    118/162.79 = 82.97/x
  3. Step 3: Cross multiply
    118x = 162.79 × 82.97
  4. Step 4: Simplify right side
    118x = 13,506.69
  5. Step 5: Solve for x
    x = 13,506.69/118
  6. Step 6: Final answer
    x = 114.46

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