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Finding the Fourth Proportional to 133.94, 200.49 and 123.81

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Solution

The fourth proportional to 133.94, 200.49 and 123.81 is: 185.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.94 : 200.49 = 123.81 : x
  2. Step 2: Convert to fraction form
    133.94/200.49 = 123.81/x
  3. Step 3: Cross multiply
    133.94x = 200.49 × 123.81
  4. Step 4: Simplify right side
    133.94x = 24,822.67
  5. Step 5: Solve for x
    x = 24,822.67/133.94
  6. Step 6: Final answer
    x = 185.33

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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.