Home / 131,916.12-197,971.38-82,069.56

Finding the Fourth Proportional to 131,916.12, 197,971.38 and 82,069.56

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Solution

The fourth proportional to 131,916.12, 197,971.38 and 82,069.56 is: 123,164.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,916.12 : 197,971.38 = 82,069.56 : x
  2. Step 2: Convert to fraction form
    131,916.12/197,971.38 = 82,069.56/x
  3. Step 3: Cross multiply
    131,916.12x = 197,971.38 × 82,069.56
  4. Step 4: Simplify right side
    131,916.12x = 16,247,424,049.19
  5. Step 5: Solve for x
    x = 16,247,424,049.19/131,916.12
  6. Step 6: Final answer
    x = 123,164.81

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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.