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Finding the Fourth Proportional to 136.23, 204.05 and 126.73

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Solution

The fourth proportional to 136.23, 204.05 and 126.73 is: 189.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    136.23 : 204.05 = 126.73 : x
  2. Step 2: Convert to fraction form
    136.23/204.05 = 126.73/x
  3. Step 3: Cross multiply
    136.23x = 204.05 × 126.73
  4. Step 4: Simplify right side
    136.23x = 25,858.62
  5. Step 5: Solve for x
    x = 25,858.62/136.23
  6. Step 6: Final answer
    x = 189.82

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