Home / 171,569.20-257,454.90-71,721.70

Finding the Fourth Proportional to 171,569.20, 257,454.90 and 71,721.70

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Solution

The fourth proportional to 171,569.20, 257,454.90 and 71,721.70 is: 107,624.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,569.20 : 257,454.90 = 71,721.70 : x
  2. Step 2: Convert to fraction form
    171,569.20/257,454.90 = 71,721.70/x
  3. Step 3: Cross multiply
    171,569.20x = 257,454.90 × 71,721.70
  4. Step 4: Simplify right side
    171,569.20x = 18,465,103,101.33
  5. Step 5: Solve for x
    x = 18,465,103,101.33/171,569.20
  6. Step 6: Final answer
    x = 107,624.81

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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.