Home / 171,570.20-257,456.40-71,722.70

Finding the Fourth Proportional to 171,570.20, 257,456.40 and 71,722.70

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Solution

The fourth proportional to 171,570.20, 257,456.40 and 71,722.70 is: 107,626.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,570.20 : 257,456.40 = 71,722.70 : x
  2. Step 2: Convert to fraction form
    171,570.20/257,456.40 = 71,722.70/x
  3. Step 3: Cross multiply
    171,570.20x = 257,456.40 × 71,722.70
  4. Step 4: Simplify right side
    171,570.20x = 18,465,468,140.28
  5. Step 5: Solve for x
    x = 18,465,468,140.28/171,570.20
  6. Step 6: Final answer
    x = 107,626.31

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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.