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Finding the Fourth Proportional to 107.82, 161.73 and 102.69

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Solution

The fourth proportional to 107.82, 161.73 and 102.69 is: 154.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.82 : 161.73 = 102.69 : x
  2. Step 2: Convert to fraction form
    107.82/161.73 = 102.69/x
  3. Step 3: Cross multiply
    107.82x = 161.73 × 102.69
  4. Step 4: Simplify right side
    107.82x = 16,608.05
  5. Step 5: Solve for x
    x = 16,608.05/107.82
  6. Step 6: Final answer
    x = 154.04

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