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Finding the Fourth Proportional to 169,515.84, 254,279.00 and 85,279.43

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Solution

The fourth proportional to 169,515.84, 254,279.00 and 85,279.43 is: 127,921.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,515.84 : 254,279.00 = 85,279.43 : x
  2. Step 2: Convert to fraction form
    169,515.84/254,279.00 = 85,279.43/x
  3. Step 3: Cross multiply
    169,515.84x = 254,279.00 × 85,279.43
  4. Step 4: Simplify right side
    169,515.84x = 21,684,768,550.17
  5. Step 5: Solve for x
    x = 21,684,768,550.17/169,515.84
  6. Step 6: Final answer
    x = 127,921.78

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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.