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Finding the Fourth Proportional to 131.99, 198.12 and 71.25

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Solution

The fourth proportional to 131.99, 198.12 and 71.25 is: 106.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131.99 : 198.12 = 71.25 : x
  2. Step 2: Convert to fraction form
    131.99/198.12 = 71.25/x
  3. Step 3: Cross multiply
    131.99x = 198.12 × 71.25
  4. Step 4: Simplify right side
    131.99x = 14,116.66
  5. Step 5: Solve for x
    x = 14,116.66/131.99
  6. Step 6: Final answer
    x = 106.95

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