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Finding the Fourth Proportional to 140.05, 209.97 and 121.02

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Solution

The fourth proportional to 140.05, 209.97 and 121.02 is: 181.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.05 : 209.97 = 121.02 : x
  2. Step 2: Convert to fraction form
    140.05/209.97 = 121.02/x
  3. Step 3: Cross multiply
    140.05x = 209.97 × 121.02
  4. Step 4: Simplify right side
    140.05x = 25,410.57
  5. Step 5: Solve for x
    x = 25,410.57/140.05
  6. Step 6: Final answer
    x = 181.44

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