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Finding the Fourth Proportional to 169,755.97, 254,384.72 and 85,400.19

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Solution

The fourth proportional to 169,755.97, 254,384.72 and 85,400.19 is: 127,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,755.97 : 254,384.72 = 85,400.19 : x
  2. Step 2: Convert to fraction form
    169,755.97/254,384.72 = 85,400.19/x
  3. Step 3: Cross multiply
    169,755.97x = 254,384.72 × 85,400.19
  4. Step 4: Simplify right side
    169,755.97x = 21,724,503,314.35
  5. Step 5: Solve for x
    x = 21,724,503,314.35/169,755.97
  6. Step 6: Final answer
    x = 127,974.90

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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.