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Finding the Fourth Proportional to 173.74, 239.63 and 111.58

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Solution

The fourth proportional to 173.74, 239.63 and 111.58 is: 153.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.74 : 239.63 = 111.58 : x
  2. Step 2: Convert to fraction form
    173.74/239.63 = 111.58/x
  3. Step 3: Cross multiply
    173.74x = 239.63 × 111.58
  4. Step 4: Simplify right side
    173.74x = 26,736.16
  5. Step 5: Solve for x
    x = 26,736.16/173.74
  6. Step 6: Final answer
    x = 153.89

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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.