Home / 205,229.34-307,890.18-72,118.80

Finding the Fourth Proportional to 205,229.34, 307,890.18 and 72,118.80

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Solution

The fourth proportional to 205,229.34, 307,890.18 and 72,118.80 is: 108,194.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,229.34 : 307,890.18 = 72,118.80 : x
  2. Step 2: Convert to fraction form
    205,229.34/307,890.18 = 72,118.80/x
  3. Step 3: Cross multiply
    205,229.34x = 307,890.18 × 72,118.80
  4. Step 4: Simplify right side
    205,229.34x = 22,204,670,313.38
  5. Step 5: Solve for x
    x = 22,204,670,313.38/205,229.34
  6. Step 6: Final answer
    x = 108,194.42

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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.