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Finding the Fourth Proportional to 144.91, 216.90 and 108.91

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Solution

The fourth proportional to 144.91, 216.90 and 108.91 is: 163.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    144.91 : 216.90 = 108.91 : x
  2. Step 2: Convert to fraction form
    144.91/216.90 = 108.91/x
  3. Step 3: Cross multiply
    144.91x = 216.90 × 108.91
  4. Step 4: Simplify right side
    144.91x = 23,622.58
  5. Step 5: Solve for x
    x = 23,622.58/144.91
  6. Step 6: Final answer
    x = 163.02

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