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Finding the Fourth Proportional to 173.33, 239.21 and 123.56

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Solution

The fourth proportional to 173.33, 239.21 and 123.56 is: 170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.33 : 239.21 = 123.56 : x
  2. Step 2: Convert to fraction form
    173.33/239.21 = 123.56/x
  3. Step 3: Cross multiply
    173.33x = 239.21 × 123.56
  4. Step 4: Simplify right side
    173.33x = 29,554.97
  5. Step 5: Solve for x
    x = 29,554.97/173.33
  6. Step 6: Final answer
    x = 170.51

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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.