Home / 204,916.80-307,375.20-137,994.60

Finding the Fourth Proportional to 204,916.80, 307,375.20 and 137,994.60

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Solution

The fourth proportional to 204,916.80, 307,375.20 and 137,994.60 is: 206,991.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,916.80 : 307,375.20 = 137,994.60 : x
  2. Step 2: Convert to fraction form
    204,916.80/307,375.20 = 137,994.60/x
  3. Step 3: Cross multiply
    204,916.80x = 307,375.20 × 137,994.60
  4. Step 4: Simplify right side
    204,916.80x = 42,416,117,773.92
  5. Step 5: Solve for x
    x = 42,416,117,773.92/204,916.80
  6. Step 6: Final answer
    x = 206,991.90

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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.