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Finding the Fourth Proportional to 171,101.79, 256,696.49 and 71,228.79

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Solution

The fourth proportional to 171,101.79, 256,696.49 and 71,228.79 is: 106,861.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,101.79 : 256,696.49 = 71,228.79 : x
  2. Step 2: Convert to fraction form
    171,101.79/256,696.49 = 71,228.79/x
  3. Step 3: Cross multiply
    171,101.79x = 256,696.49 × 71,228.79
  4. Step 4: Simplify right side
    171,101.79x = 18,284,180,023.80
  5. Step 5: Solve for x
    x = 18,284,180,023.80/171,101.79
  6. Step 6: Final answer
    x = 106,861.42

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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.