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Finding the Fourth Proportional to 169,711.60, 254,640.30 and 86,605.60

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Solution

The fourth proportional to 169,711.60, 254,640.30 and 86,605.60 is: 129,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,711.60 : 254,640.30 = 86,605.60 : x
  2. Step 2: Convert to fraction form
    169,711.60/254,640.30 = 86,605.60/x
  3. Step 3: Cross multiply
    169,711.60x = 254,640.30 × 86,605.60
  4. Step 4: Simplify right side
    169,711.60x = 22,053,275,965.68
  5. Step 5: Solve for x
    x = 22,053,275,965.68/169,711.60
  6. Step 6: Final answer
    x = 129,945.60

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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.