Home / 126,893.62-190,132.78-76,821.96

Finding the Fourth Proportional to 126,893.62, 190,132.78 and 76,821.96

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Solution

The fourth proportional to 126,893.62, 190,132.78 and 76,821.96 is: 115,107.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,893.62 : 190,132.78 = 76,821.96 : x
  2. Step 2: Convert to fraction form
    126,893.62/190,132.78 = 76,821.96/x
  3. Step 3: Cross multiply
    126,893.62x = 190,132.78 × 76,821.96
  4. Step 4: Simplify right side
    126,893.62x = 14,606,372,819.85
  5. Step 5: Solve for x
    x = 14,606,372,819.85/126,893.62
  6. Step 6: Final answer
    x = 115,107.23

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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.