Home / 198,198.26-297,342.78-85,897.31

Finding the Fourth Proportional to 198,198.26, 297,342.78 and 85,897.31

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Solution

The fourth proportional to 198,198.26, 297,342.78 and 85,897.31 is: 128,865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,198.26 : 297,342.78 = 85,897.31 : x
  2. Step 2: Convert to fraction form
    198,198.26/297,342.78 = 85,897.31/x
  3. Step 3: Cross multiply
    198,198.26x = 297,342.78 × 85,897.31
  4. Step 4: Simplify right side
    198,198.26x = 25,540,944,949.92
  5. Step 5: Solve for x
    x = 25,540,944,949.92/198,198.26
  6. Step 6: Final answer
    x = 128,865.64

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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.