Home / 138,419.37-207,629.06-38,579.85

Finding the Fourth Proportional to 138,419.37, 207,629.06 and 38,579.85

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Solution

The fourth proportional to 138,419.37, 207,629.06 and 38,579.85 is: 57,869.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,419.37 : 207,629.06 = 38,579.85 : x
  2. Step 2: Convert to fraction form
    138,419.37/207,629.06 = 38,579.85/x
  3. Step 3: Cross multiply
    138,419.37x = 207,629.06 × 38,579.85
  4. Step 4: Simplify right side
    138,419.37x = 8,010,297,797.54
  5. Step 5: Solve for x
    x = 8,010,297,797.54/138,419.37
  6. Step 6: Final answer
    x = 57,869.78

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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.