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Finding the Fourth Proportional to 167.26, 251.06 and 123.79

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Solution

The fourth proportional to 167.26, 251.06 and 123.79 is: 185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.26 : 251.06 = 123.79 : x
  2. Step 2: Convert to fraction form
    167.26/251.06 = 123.79/x
  3. Step 3: Cross multiply
    167.26x = 251.06 × 123.79
  4. Step 4: Simplify right side
    167.26x = 31,077.77
  5. Step 5: Solve for x
    x = 31,077.77/167.26
  6. Step 6: Final answer
    x = 185.81

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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.