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Finding the Fourth Proportional to 158.25, 218.09 and 118.84

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Solution

The fourth proportional to 158.25, 218.09 and 118.84 is: 163.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.25 : 218.09 = 118.84 : x
  2. Step 2: Convert to fraction form
    158.25/218.09 = 118.84/x
  3. Step 3: Cross multiply
    158.25x = 218.09 × 118.84
  4. Step 4: Simplify right side
    158.25x = 25,918.59
  5. Step 5: Solve for x
    x = 25,918.59/158.25
  6. Step 6: Final answer
    x = 163.78

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