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Finding the Fourth Proportional to 159, 238.67 and 67.74

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Solution

The fourth proportional to 159, 238.67 and 67.74 is: 101.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    159 : 238.67 = 67.74 : x
  2. Step 2: Convert to fraction form
    159/238.67 = 67.74/x
  3. Step 3: Cross multiply
    159x = 238.67 × 67.74
  4. Step 4: Simplify right side
    159x = 16,167.51
  5. Step 5: Solve for x
    x = 16,167.51/159
  6. Step 6: Final answer
    x = 101.68

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