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Finding the Fourth Proportional to 199,311.78, 275,046.55 and 108,668.52

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Solution

The fourth proportional to 199,311.78, 275,046.55 and 108,668.52 is: 149,960.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,311.78 : 275,046.55 = 108,668.52 : x
  2. Step 2: Convert to fraction form
    199,311.78/275,046.55 = 108,668.52/x
  3. Step 3: Cross multiply
    199,311.78x = 275,046.55 × 108,668.52
  4. Step 4: Simplify right side
    199,311.78x = 29,888,901,519.61
  5. Step 5: Solve for x
    x = 29,888,901,519.61/199,311.78
  6. Step 6: Final answer
    x = 149,960.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.