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Finding the Fourth Proportional to 107.44, 161.16 and 79.12

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Solution

The fourth proportional to 107.44, 161.16 and 79.12 is: 118.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.44 : 161.16 = 79.12 : x
  2. Step 2: Convert to fraction form
    107.44/161.16 = 79.12/x
  3. Step 3: Cross multiply
    107.44x = 161.16 × 79.12
  4. Step 4: Simplify right side
    107.44x = 12,750.98
  5. Step 5: Solve for x
    x = 12,750.98/107.44
  6. Step 6: Final answer
    x = 118.68

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