Home / 107,965.76-161,997.84-55,412.15

Finding the Fourth Proportional to 107,965.76, 161,997.84 and 55,412.15

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Solution

The fourth proportional to 107,965.76, 161,997.84 and 55,412.15 is: 83,143.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,965.76 : 161,997.84 = 55,412.15 : x
  2. Step 2: Convert to fraction form
    107,965.76/161,997.84 = 55,412.15/x
  3. Step 3: Cross multiply
    107,965.76x = 161,997.84 × 55,412.15
  4. Step 4: Simplify right side
    107,965.76x = 8,976,647,799.77
  5. Step 5: Solve for x
    x = 8,976,647,799.77/107,965.76
  6. Step 6: Final answer
    x = 83,143.47

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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.