Home / 279,763.13-419,644.70-80,084.22

Finding the Fourth Proportional to 279,763.13, 419,644.70 and 80,084.22

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Solution

The fourth proportional to 279,763.13, 419,644.70 and 80,084.22 is: 120,126.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,763.13 : 419,644.70 = 80,084.22 : x
  2. Step 2: Convert to fraction form
    279,763.13/419,644.70 = 80,084.22/x
  3. Step 3: Cross multiply
    279,763.13x = 419,644.70 × 80,084.22
  4. Step 4: Simplify right side
    279,763.13x = 33,606,918,076.21
  5. Step 5: Solve for x
    x = 33,606,918,076.21/279,763.13
  6. Step 6: Final answer
    x = 120,126.33

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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.