Home / 138,739.78-207,984.78-49,930.84

Finding the Fourth Proportional to 138,739.78, 207,984.78 and 49,930.84

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Solution

The fourth proportional to 138,739.78, 207,984.78 and 49,930.84 is: 74,851.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,739.78 : 207,984.78 = 49,930.84 : x
  2. Step 2: Convert to fraction form
    138,739.78/207,984.78 = 49,930.84/x
  3. Step 3: Cross multiply
    138,739.78x = 207,984.78 × 49,930.84
  4. Step 4: Simplify right side
    138,739.78x = 10,384,854,772.62
  5. Step 5: Solve for x
    x = 10,384,854,772.62/138,739.78
  6. Step 6: Final answer
    x = 74,851.31

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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.