Home / 170,869.26-256,358.72-82,129.20

Finding the Fourth Proportional to 170,869.26, 256,358.72 and 82,129.20

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Solution

The fourth proportional to 170,869.26, 256,358.72 and 82,129.20 is: 123,220.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,869.26 : 256,358.72 = 82,129.20 : x
  2. Step 2: Convert to fraction form
    170,869.26/256,358.72 = 82,129.20/x
  3. Step 3: Cross multiply
    170,869.26x = 256,358.72 × 82,129.20
  4. Step 4: Simplify right side
    170,869.26x = 21,054,536,586.62
  5. Step 5: Solve for x
    x = 21,054,536,586.62/170,869.26
  6. Step 6: Final answer
    x = 123,220.15

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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.