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Finding the Fourth Proportional to 170,865.88, 256,353.66 and 82,125.82

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Solution

The fourth proportional to 170,865.88, 256,353.66 and 82,125.82 is: 123,215.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,865.88 : 256,353.66 = 82,125.82 : x
  2. Step 2: Convert to fraction form
    170,865.88/256,353.66 = 82,125.82/x
  3. Step 3: Cross multiply
    170,865.88x = 256,353.66 × 82,125.82
  4. Step 4: Simplify right side
    170,865.88x = 21,053,254,537.50
  5. Step 5: Solve for x
    x = 21,053,254,537.50/170,865.88
  6. Step 6: Final answer
    x = 123,215.09

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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.