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Finding the Fourth Proportional to 169,672.20, 254,508.30 and 86,728.20

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Solution

The fourth proportional to 169,672.20, 254,508.30 and 86,728.20 is: 130,092.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,672.20 : 254,508.30 = 86,728.20 : x
  2. Step 2: Convert to fraction form
    169,672.20/254,508.30 = 86,728.20/x
  3. Step 3: Cross multiply
    169,672.20x = 254,508.30 × 86,728.20
  4. Step 4: Simplify right side
    169,672.20x = 22,073,046,744.06
  5. Step 5: Solve for x
    x = 22,073,046,744.06/169,672.20
  6. Step 6: Final answer
    x = 130,092.30

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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.