Home / 208,845.20-313,049.10-82,436.60

Finding the Fourth Proportional to 208,845.20, 313,049.10 and 82,436.60

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Solution

The fourth proportional to 208,845.20, 313,049.10 and 82,436.60 is: 123,568.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,845.20 : 313,049.10 = 82,436.60 : x
  2. Step 2: Convert to fraction form
    208,845.20/313,049.10 = 82,436.60/x
  3. Step 3: Cross multiply
    208,845.20x = 313,049.10 × 82,436.60
  4. Step 4: Simplify right side
    208,845.20x = 25,806,703,437.06
  5. Step 5: Solve for x
    x = 25,806,703,437.06/208,845.20
  6. Step 6: Final answer
    x = 123,568.57

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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.