Home / 171,749.97-257,403.20-76,910.85

Finding the Fourth Proportional to 171,749.97, 257,403.20 and 76,910.85

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Solution

The fourth proportional to 171,749.97, 257,403.20 and 76,910.85 is: 115,266.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,749.97 : 257,403.20 = 76,910.85 : x
  2. Step 2: Convert to fraction form
    171,749.97/257,403.20 = 76,910.85/x
  3. Step 3: Cross multiply
    171,749.97x = 257,403.20 × 76,910.85
  4. Step 4: Simplify right side
    171,749.97x = 19,797,098,520.17
  5. Step 5: Solve for x
    x = 19,797,098,520.17/171,749.97
  6. Step 6: Final answer
    x = 115,266.97

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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.