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Finding the Fourth Proportional to 118.80, 177.36 and 98.56

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Solution

The fourth proportional to 118.80, 177.36 and 98.56 is: 147.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.80 : 177.36 = 98.56 : x
  2. Step 2: Convert to fraction form
    118.80/177.36 = 98.56/x
  3. Step 3: Cross multiply
    118.80x = 177.36 × 98.56
  4. Step 4: Simplify right side
    118.80x = 17,480.60
  5. Step 5: Solve for x
    x = 17,480.60/118.80
  6. Step 6: Final answer
    x = 147.14

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