Home / 206,799.06-285,491.10-139,171.62

Finding the Fourth Proportional to 206,799.06, 285,491.10 and 139,171.62

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Solution

The fourth proportional to 206,799.06, 285,491.10 and 139,171.62 is: 192,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,799.06 : 285,491.10 = 139,171.62 : x
  2. Step 2: Convert to fraction form
    206,799.06/285,491.10 = 139,171.62/x
  3. Step 3: Cross multiply
    206,799.06x = 285,491.10 × 139,171.62
  4. Step 4: Simplify right side
    206,799.06x = 39,732,258,882.58
  5. Step 5: Solve for x
    x = 39,732,258,882.58/206,799.06
  6. Step 6: Final answer
    x = 192,129.78

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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.