Home / 138,697.11-207,920.78-49,888.19

Finding the Fourth Proportional to 138,697.11, 207,920.78 and 49,888.19

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Solution

The fourth proportional to 138,697.11, 207,920.78 and 49,888.19 is: 74,787.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,697.11 : 207,920.78 = 49,888.19 : x
  2. Step 2: Convert to fraction form
    138,697.11/207,920.78 = 49,888.19/x
  3. Step 3: Cross multiply
    138,697.11x = 207,920.78 × 49,888.19
  4. Step 4: Simplify right side
    138,697.11x = 10,372,791,377.59
  5. Step 5: Solve for x
    x = 10,372,791,377.59/138,697.11
  6. Step 6: Final answer
    x = 74,787.36

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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.