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Finding the Fourth Proportional to 107.97, 161.88 and 50.16

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Solution

The fourth proportional to 107.97, 161.88 and 50.16 is: 75.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.97 : 161.88 = 50.16 : x
  2. Step 2: Convert to fraction form
    107.97/161.88 = 50.16/x
  3. Step 3: Cross multiply
    107.97x = 161.88 × 50.16
  4. Step 4: Simplify right side
    107.97x = 8,119.90
  5. Step 5: Solve for x
    x = 8,119.90/107.97
  6. Step 6: Final answer
    x = 75.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.