Home / 205,584.38-308,421.92-87,356.78

Finding the Fourth Proportional to 205,584.38, 308,421.92 and 87,356.78

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Solution

The fourth proportional to 205,584.38, 308,421.92 and 87,356.78 is: 131,054.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,584.38 : 308,421.92 = 87,356.78 : x
  2. Step 2: Convert to fraction form
    205,584.38/308,421.92 = 87,356.78/x
  3. Step 3: Cross multiply
    205,584.38x = 308,421.92 × 87,356.78
  4. Step 4: Simplify right side
    205,584.38x = 26,942,744,488.90
  5. Step 5: Solve for x
    x = 26,942,744,488.90/205,584.38
  6. Step 6: Final answer
    x = 131,054.44

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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.