Home / 138,615.84-207,949.38-43,869.90

Finding the Fourth Proportional to 138,615.84, 207,949.38 and 43,869.90

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Solution

The fourth proportional to 138,615.84, 207,949.38 and 43,869.90 is: 65,812.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,615.84 : 207,949.38 = 43,869.90 : x
  2. Step 2: Convert to fraction form
    138,615.84/207,949.38 = 43,869.90/x
  3. Step 3: Cross multiply
    138,615.84x = 207,949.38 × 43,869.90
  4. Step 4: Simplify right side
    138,615.84x = 9,122,718,505.66
  5. Step 5: Solve for x
    x = 9,122,718,505.66/138,615.84
  6. Step 6: Final answer
    x = 65,812.96

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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.