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Finding the Fourth Proportional to 153.91, 230.91 and 113.83

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Solution

The fourth proportional to 153.91, 230.91 and 113.83 is: 170.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153.91 : 230.91 = 113.83 : x
  2. Step 2: Convert to fraction form
    153.91/230.91 = 113.83/x
  3. Step 3: Cross multiply
    153.91x = 230.91 × 113.83
  4. Step 4: Simplify right side
    153.91x = 26,284.49
  5. Step 5: Solve for x
    x = 26,284.49/153.91
  6. Step 6: Final answer
    x = 170.78

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