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Finding the Fourth Proportional to 169,171.60, 253,757.40 and 84,899.20

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Solution

The fourth proportional to 169,171.60, 253,757.40 and 84,899.20 is: 127,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,171.60 : 253,757.40 = 84,899.20 : x
  2. Step 2: Convert to fraction form
    169,171.60/253,757.40 = 84,899.20/x
  3. Step 3: Cross multiply
    169,171.60x = 253,757.40 × 84,899.20
  4. Step 4: Simplify right side
    169,171.60x = 21,543,800,254.08
  5. Step 5: Solve for x
    x = 21,543,800,254.08/169,171.60
  6. Step 6: Final answer
    x = 127,348.80

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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.