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Finding the Fourth Proportional to 151.61, 209.12 and 102.42

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Solution

The fourth proportional to 151.61, 209.12 and 102.42 is: 141.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.61 : 209.12 = 102.42 : x
  2. Step 2: Convert to fraction form
    151.61/209.12 = 102.42/x
  3. Step 3: Cross multiply
    151.61x = 209.12 × 102.42
  4. Step 4: Simplify right side
    151.61x = 21,417.56
  5. Step 5: Solve for x
    x = 21,417.56/151.61
  6. Step 6: Final answer
    x = 141.27

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