Home / 107,721.80-161,517.90-55,233.80

Finding the Fourth Proportional to 107,721.80, 161,517.90 and 55,233.80

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Solution

The fourth proportional to 107,721.80, 161,517.90 and 55,233.80 is: 82,817.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,721.80 : 161,517.90 = 55,233.80 : x
  2. Step 2: Convert to fraction form
    107,721.80/161,517.90 = 55,233.80/x
  3. Step 3: Cross multiply
    107,721.80x = 161,517.90 × 55,233.80
  4. Step 4: Simplify right side
    107,721.80x = 8,921,247,385.02
  5. Step 5: Solve for x
    x = 8,921,247,385.02/107,721.80
  6. Step 6: Final answer
    x = 82,817.47

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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.