Home / 208,982.16-313,432.43-66,789.29

Finding the Fourth Proportional to 208,982.16, 313,432.43 and 66,789.29

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Solution

The fourth proportional to 208,982.16, 313,432.43 and 66,789.29 is: 100,170.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,982.16 : 313,432.43 = 66,789.29 : x
  2. Step 2: Convert to fraction form
    208,982.16/313,432.43 = 66,789.29/x
  3. Step 3: Cross multiply
    208,982.16x = 313,432.43 × 66,789.29
  4. Step 4: Simplify right side
    208,982.16x = 20,933,929,912.31
  5. Step 5: Solve for x
    x = 20,933,929,912.31/208,982.16
  6. Step 6: Final answer
    x = 100,170.89

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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.