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Finding the Fourth Proportional to 168.13, 251.70 and 119.26

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Solution

The fourth proportional to 168.13, 251.70 and 119.26 is: 178.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.13 : 251.70 = 119.26 : x
  2. Step 2: Convert to fraction form
    168.13/251.70 = 119.26/x
  3. Step 3: Cross multiply
    168.13x = 251.70 × 119.26
  4. Step 4: Simplify right side
    168.13x = 30,017.74
  5. Step 5: Solve for x
    x = 30,017.74/168.13
  6. Step 6: Final answer
    x = 178.54

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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.