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Finding the Fourth Proportional to 173.98, 239.97 and 111.89

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Solution

The fourth proportional to 173.98, 239.97 and 111.89 is: 154.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.98 : 239.97 = 111.89 : x
  2. Step 2: Convert to fraction form
    173.98/239.97 = 111.89/x
  3. Step 3: Cross multiply
    173.98x = 239.97 × 111.89
  4. Step 4: Simplify right side
    173.98x = 26,849.89
  5. Step 5: Solve for x
    x = 26,849.89/173.98
  6. Step 6: Final answer
    x = 154.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.