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Finding the Fourth Proportional to 170,232.60, 255,348.90 and 86,251.80

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Solution

The fourth proportional to 170,232.60, 255,348.90 and 86,251.80 is: 129,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,232.60 : 255,348.90 = 86,251.80 : x
  2. Step 2: Convert to fraction form
    170,232.60/255,348.90 = 86,251.80/x
  3. Step 3: Cross multiply
    170,232.60x = 255,348.90 × 86,251.80
  4. Step 4: Simplify right side
    170,232.60x = 22,024,302,253.02
  5. Step 5: Solve for x
    x = 22,024,302,253.02/170,232.60
  6. Step 6: Final answer
    x = 129,377.70

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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.