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Finding the Fourth Proportional to 133.24, 183.90 and 102.10

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Solution

The fourth proportional to 133.24, 183.90 and 102.10 is: 140.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.24 : 183.90 = 102.10 : x
  2. Step 2: Convert to fraction form
    133.24/183.90 = 102.10/x
  3. Step 3: Cross multiply
    133.24x = 183.90 × 102.10
  4. Step 4: Simplify right side
    133.24x = 18,776.19
  5. Step 5: Solve for x
    x = 18,776.19/133.24
  6. Step 6: Final answer
    x = 140.92

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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.