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Finding the Fourth Proportional to 122.73, 185.04 and 121.71

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Solution

The fourth proportional to 122.73, 185.04 and 121.71 is: 183.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.73 : 185.04 = 121.71 : x
  2. Step 2: Convert to fraction form
    122.73/185.04 = 121.71/x
  3. Step 3: Cross multiply
    122.73x = 185.04 × 121.71
  4. Step 4: Simplify right side
    122.73x = 22,521.22
  5. Step 5: Solve for x
    x = 22,521.22/122.73
  6. Step 6: Final answer
    x = 183.50

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.