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Finding the Fourth Proportional to 122,182.56, 168,609.60 and 79,660.80

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Solution

The fourth proportional to 122,182.56, 168,609.60 and 79,660.80 is: 109,930.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,182.56 : 168,609.60 = 79,660.80 : x
  2. Step 2: Convert to fraction form
    122,182.56/168,609.60 = 79,660.80/x
  3. Step 3: Cross multiply
    122,182.56x = 168,609.60 × 79,660.80
  4. Step 4: Simplify right side
    122,182.56x = 13,431,575,623.68
  5. Step 5: Solve for x
    x = 13,431,575,623.68/122,182.56
  6. Step 6: Final answer
    x = 109,930.38

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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.