Home / 149,990.20-206,986.38-82,007.44

Finding the Fourth Proportional to 149,990.20, 206,986.38 and 82,007.44

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Solution

The fourth proportional to 149,990.20, 206,986.38 and 82,007.44 is: 113,170.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,990.20 : 206,986.38 = 82,007.44 : x
  2. Step 2: Convert to fraction form
    149,990.20/206,986.38 = 82,007.44/x
  3. Step 3: Cross multiply
    149,990.20x = 206,986.38 × 82,007.44
  4. Step 4: Simplify right side
    149,990.20x = 16,974,423,138.67
  5. Step 5: Solve for x
    x = 16,974,423,138.67/149,990.20
  6. Step 6: Final answer
    x = 113,170.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.