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Finding the Fourth Proportional to 134.11, 201.17 and 79.91

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Solution

The fourth proportional to 134.11, 201.17 and 79.91 is: 119.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.11 : 201.17 = 79.91 : x
  2. Step 2: Convert to fraction form
    134.11/201.17 = 79.91/x
  3. Step 3: Cross multiply
    134.11x = 201.17 × 79.91
  4. Step 4: Simplify right side
    134.11x = 16,075.49
  5. Step 5: Solve for x
    x = 16,075.49/134.11
  6. Step 6: Final answer
    x = 119.87

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