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Finding the Fourth Proportional to 170,454.26, 255,839.13 and 86,273.54

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Solution

The fourth proportional to 170,454.26, 255,839.13 and 86,273.54 is: 129,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,454.26 : 255,839.13 = 86,273.54 : x
  2. Step 2: Convert to fraction form
    170,454.26/255,839.13 = 86,273.54/x
  3. Step 3: Cross multiply
    170,454.26x = 255,839.13 × 86,273.54
  4. Step 4: Simplify right side
    170,454.26x = 22,072,146,136.42
  5. Step 5: Solve for x
    x = 22,072,146,136.42/170,454.26
  6. Step 6: Final answer
    x = 129,490.14

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1.5x scale

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.