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Finding the Fourth Proportional to 122,255.28, 168,729.57 and 67,819.65

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Solution

The fourth proportional to 122,255.28, 168,729.57 and 67,819.65 is: 93,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,255.28 : 168,729.57 = 67,819.65 : x
  2. Step 2: Convert to fraction form
    122,255.28/168,729.57 = 67,819.65/x
  3. Step 3: Cross multiply
    122,255.28x = 168,729.57 × 67,819.65
  4. Step 4: Simplify right side
    122,255.28x = 11,443,180,382.05
  5. Step 5: Solve for x
    x = 11,443,180,382.05/122,255.28
  6. Step 6: Final answer
    x = 93,600.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.