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Finding the Fourth Proportional to 133,469.11, 200,109.16 and 66,861.73

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Solution

The fourth proportional to 133,469.11, 200,109.16 and 66,861.73 is: 100,245.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,469.11 : 200,109.16 = 66,861.73 : x
  2. Step 2: Convert to fraction form
    133,469.11/200,109.16 = 66,861.73/x
  3. Step 3: Cross multiply
    133,469.11x = 200,109.16 × 66,861.73
  4. Step 4: Simplify right side
    133,469.11x = 13,379,644,626.45
  5. Step 5: Solve for x
    x = 13,379,644,626.45/133,469.11
  6. Step 6: Final answer
    x = 100,245.25

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1.5x scale

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.