Home / 205,220.34-307,876.68-72,109.80

Finding the Fourth Proportional to 205,220.34, 307,876.68 and 72,109.80

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Solution

The fourth proportional to 205,220.34, 307,876.68 and 72,109.80 is: 108,180.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,220.34 : 307,876.68 = 72,109.80 : x
  2. Step 2: Convert to fraction form
    205,220.34/307,876.68 = 72,109.80/x
  3. Step 3: Cross multiply
    205,220.34x = 307,876.68 × 72,109.80
  4. Step 4: Simplify right side
    205,220.34x = 22,200,925,819.46
  5. Step 5: Solve for x
    x = 22,200,925,819.46/205,220.34
  6. Step 6: Final answer
    x = 108,180.92

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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.