Home / 138,019.21-207,072.56-49,270.75

Finding the Fourth Proportional to 138,019.21, 207,072.56 and 49,270.75

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Solution

The fourth proportional to 138,019.21, 207,072.56 and 49,270.75 is: 73,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,019.21 : 207,072.56 = 49,270.75 : x
  2. Step 2: Convert to fraction form
    138,019.21/207,072.56 = 49,270.75/x
  3. Step 3: Cross multiply
    138,019.21x = 207,072.56 × 49,270.75
  4. Step 4: Simplify right side
    138,019.21x = 10,202,620,335.62
  5. Step 5: Solve for x
    x = 10,202,620,335.62/138,019.21
  6. Step 6: Final answer
    x = 73,921.74

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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.