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Finding the Fourth Proportional to 111,189.63, 166,791.85 and 39,133.86

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Solution

The fourth proportional to 111,189.63, 166,791.85 and 39,133.86 is: 58,703.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,189.63 : 166,791.85 = 39,133.86 : x
  2. Step 2: Convert to fraction form
    111,189.63/166,791.85 = 39,133.86/x
  3. Step 3: Cross multiply
    111,189.63x = 166,791.85 × 39,133.86
  4. Step 4: Simplify right side
    111,189.63x = 6,527,208,183.74
  5. Step 5: Solve for x
    x = 6,527,208,183.74/111,189.63
  6. Step 6: Final answer
    x = 58,703.39

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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.