Home / 69,321.40-103,982.10-68,738.20

Finding the Fourth Proportional to 69,321.40, 103,982.10 and 68,738.20

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Solution

The fourth proportional to 69,321.40, 103,982.10 and 68,738.20 is: 103,107.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,321.40 : 103,982.10 = 68,738.20 : x
  2. Step 2: Convert to fraction form
    69,321.40/103,982.10 = 68,738.20/x
  3. Step 3: Cross multiply
    69,321.40x = 103,982.10 × 68,738.20
  4. Step 4: Simplify right side
    69,321.40x = 7,147,542,386.22
  5. Step 5: Solve for x
    x = 7,147,542,386.22/69,321.40
  6. Step 6: Final answer
    x = 103,107.30

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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.