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Finding the Fourth Proportional to 107.10, 159.96 and 96.90

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Solution

The fourth proportional to 107.10, 159.96 and 96.90 is: 144.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    107.10 : 159.96 = 96.90 : x
  2. Step 2: Convert to fraction form
    107.10/159.96 = 96.90/x
  3. Step 3: Cross multiply
    107.10x = 159.96 × 96.90
  4. Step 4: Simplify right side
    107.10x = 15,500.12
  5. Step 5: Solve for x
    x = 15,500.12/107.10
  6. Step 6: Final answer
    x = 144.73

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.