Home / 204,910.80-307,366.20-137,988.60

Finding the Fourth Proportional to 204,910.80, 307,366.20 and 137,988.60

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Solution

The fourth proportional to 204,910.80, 307,366.20 and 137,988.60 is: 206,982.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,910.80 : 307,366.20 = 137,988.60 : x
  2. Step 2: Convert to fraction form
    204,910.80/307,366.20 = 137,988.60/x
  3. Step 3: Cross multiply
    204,910.80x = 307,366.20 × 137,988.60
  4. Step 4: Simplify right side
    204,910.80x = 42,413,031,625.32
  5. Step 5: Solve for x
    x = 42,413,031,625.32/204,910.80
  6. Step 6: Final answer
    x = 206,982.90

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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.