Home / 279,834.10-419,627.31-80,108.98

Finding the Fourth Proportional to 279,834.10, 419,627.31 and 80,108.98

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Solution

The fourth proportional to 279,834.10, 419,627.31 and 80,108.98 is: 120,128.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,834.10 : 419,627.31 = 80,108.98 : x
  2. Step 2: Convert to fraction form
    279,834.10/419,627.31 = 80,108.98/x
  3. Step 3: Cross multiply
    279,834.10x = 419,627.31 × 80,108.98
  4. Step 4: Simplify right side
    279,834.10x = 33,615,915,784.24
  5. Step 5: Solve for x
    x = 33,615,915,784.24/279,834.10
  6. Step 6: Final answer
    x = 120,128.02

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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.