Home / 168,029.20-231,777.78-100,000.60

Finding the Fourth Proportional to 168,029.20, 231,777.78 and 100,000.60

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Solution

The fourth proportional to 168,029.20, 231,777.78 and 100,000.60 is: 137,939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,029.20 : 231,777.78 = 100,000.60 : x
  2. Step 2: Convert to fraction form
    168,029.20/231,777.78 = 100,000.60/x
  3. Step 3: Cross multiply
    168,029.20x = 231,777.78 × 100,000.60
  4. Step 4: Simplify right side
    168,029.20x = 23,177,917,066.67
  5. Step 5: Solve for x
    x = 23,177,917,066.67/168,029.20
  6. Step 6: Final answer
    x = 137,939.82

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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.