Home / 138,320.20-207,480.30-131,103.10

Finding the Fourth Proportional to 138,320.20, 207,480.30 and 131,103.10

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Solution

The fourth proportional to 138,320.20, 207,480.30 and 131,103.10 is: 196,654.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,320.20 : 207,480.30 = 131,103.10 : x
  2. Step 2: Convert to fraction form
    138,320.20/207,480.30 = 131,103.10/x
  3. Step 3: Cross multiply
    138,320.20x = 207,480.30 × 131,103.10
  4. Step 4: Simplify right side
    138,320.20x = 27,201,310,518.93
  5. Step 5: Solve for x
    x = 27,201,310,518.93/138,320.20
  6. Step 6: Final answer
    x = 196,654.65

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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.