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Finding the Fourth Proportional to 122.67, 183.79 and 119.02

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Solution

The fourth proportional to 122.67, 183.79 and 119.02 is: 178.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.67 : 183.79 = 119.02 : x
  2. Step 2: Convert to fraction form
    122.67/183.79 = 119.02/x
  3. Step 3: Cross multiply
    122.67x = 183.79 × 119.02
  4. Step 4: Simplify right side
    122.67x = 21,874.69
  5. Step 5: Solve for x
    x = 21,874.69/122.67
  6. Step 6: Final answer
    x = 178.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.