Home / 138,251,799.40-207,377,699.10-86,967,524.20

Finding the Fourth Proportional to 138,251,799.40, 207,377,699.10 and 86,967,524.20

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Solution

The fourth proportional to 138,251,799.40, 207,377,699.10 and 86,967,524.20 is: 130,451,286.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,251,799.40 : 207,377,699.10 = 86,967,524.20 : x
  2. Step 2: Convert to fraction form
    138,251,799.40/207,377,699.10 = 86,967,524.20/x
  3. Step 3: Cross multiply
    138,251,799.40x = 207,377,699.10 × 86,967,524.20
  4. Step 4: Simplify right side
    138,251,799.40x = 18,035,125,065,019,568
  5. Step 5: Solve for x
    x = 18,035,125,065,019,568/138,251,799.40
  6. Step 6: Final answer
    x = 130,451,286.30

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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.