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Finding the Fourth Proportional to 111,129.87, 166,788.24 and 104,123.55

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Solution

The fourth proportional to 111,129.87, 166,788.24 and 104,123.55 is: 156,272.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,129.87 : 166,788.24 = 104,123.55 : x
  2. Step 2: Convert to fraction form
    111,129.87/166,788.24 = 104,123.55/x
  3. Step 3: Cross multiply
    111,129.87x = 166,788.24 × 104,123.55
  4. Step 4: Simplify right side
    111,129.87x = 17,366,583,647.05
  5. Step 5: Solve for x
    x = 17,366,583,647.05/111,129.87
  6. Step 6: Final answer
    x = 156,272.87

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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.