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Finding the Fourth Proportional to 173.77, 239.53 and 136.88

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Solution

The fourth proportional to 173.77, 239.53 and 136.88 is: 188.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.77 : 239.53 = 136.88 : x
  2. Step 2: Convert to fraction form
    173.77/239.53 = 136.88/x
  3. Step 3: Cross multiply
    173.77x = 239.53 × 136.88
  4. Step 4: Simplify right side
    173.77x = 32,786.52
  5. Step 5: Solve for x
    x = 32,786.52/173.77
  6. Step 6: Final answer
    x = 188.68

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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.