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Finding the Fourth Proportional to 111,263.85, 166,845.87 and 66,306.42

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Solution

The fourth proportional to 111,263.85, 166,845.87 and 66,306.42 is: 99,429.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,263.85 : 166,845.87 = 66,306.42 : x
  2. Step 2: Convert to fraction form
    111,263.85/166,845.87 = 66,306.42/x
  3. Step 3: Cross multiply
    111,263.85x = 166,845.87 × 66,306.42
  4. Step 4: Simplify right side
    111,263.85x = 11,062,952,331.49
  5. Step 5: Solve for x
    x = 11,062,952,331.49/111,263.85
  6. Step 6: Final answer
    x = 99,429.89

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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.