Home / 138,694.11-207,916.28-49,885.19

Finding the Fourth Proportional to 138,694.11, 207,916.28 and 49,885.19

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Solution

The fourth proportional to 138,694.11, 207,916.28 and 49,885.19 is: 74,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,694.11 : 207,916.28 = 49,885.19 : x
  2. Step 2: Convert to fraction form
    138,694.11/207,916.28 = 49,885.19/x
  3. Step 3: Cross multiply
    138,694.11x = 207,916.28 × 49,885.19
  4. Step 4: Simplify right side
    138,694.11x = 10,371,943,131.89
  5. Step 5: Solve for x
    x = 10,371,943,131.89/138,694.11
  6. Step 6: Final answer
    x = 74,782.87

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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.