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Finding the Fourth Proportional to 133.72, 184.26 and 122.68

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Solution

The fourth proportional to 133.72, 184.26 and 122.68 is: 169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.72 : 184.26 = 122.68 : x
  2. Step 2: Convert to fraction form
    133.72/184.26 = 122.68/x
  3. Step 3: Cross multiply
    133.72x = 184.26 × 122.68
  4. Step 4: Simplify right side
    133.72x = 22,605.02
  5. Step 5: Solve for x
    x = 22,605.02/133.72
  6. Step 6: Final answer
    x = 169.05

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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.