Home / 138,245.20-207,205.97-52,800.05

Finding the Fourth Proportional to 138,245.20, 207,205.97 and 52,800.05

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Solution

The fourth proportional to 138,245.20, 207,205.97 and 52,800.05 is: 79,138.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,245.20 : 207,205.97 = 52,800.05 : x
  2. Step 2: Convert to fraction form
    138,245.20/207,205.97 = 52,800.05/x
  3. Step 3: Cross multiply
    138,245.20x = 207,205.97 × 52,800.05
  4. Step 4: Simplify right side
    138,245.20x = 10,940,485,830.31
  5. Step 5: Solve for x
    x = 10,940,485,830.31/138,245.20
  6. Step 6: Final answer
    x = 79,138.27

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1.5x scale

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.