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Finding the Fourth Proportional to 111,145.89, 166,635 and 36,221.31

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Solution

The fourth proportional to 111,145.89, 166,635 and 36,221.31 is: 54,304.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,145.89 : 166,635 = 36,221.31 : x
  2. Step 2: Convert to fraction form
    111,145.89/166,635 = 36,221.31/x
  3. Step 3: Cross multiply
    111,145.89x = 166,635 × 36,221.31
  4. Step 4: Simplify right side
    111,145.89x = 6,035,737,991.85
  5. Step 5: Solve for x
    x = 6,035,737,991.85/111,145.89
  6. Step 6: Final answer
    x = 54,304.64

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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.