Home / 69,078.20-103,617.30-67,542.20

Finding the Fourth Proportional to 69,078.20, 103,617.30 and 67,542.20

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Solution

The fourth proportional to 69,078.20, 103,617.30 and 67,542.20 is: 101,313.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,078.20 : 103,617.30 = 67,542.20 : x
  2. Step 2: Convert to fraction form
    69,078.20/103,617.30 = 67,542.20/x
  3. Step 3: Cross multiply
    69,078.20x = 103,617.30 × 67,542.20
  4. Step 4: Simplify right side
    69,078.20x = 6,998,540,400.06
  5. Step 5: Solve for x
    x = 6,998,540,400.06/69,078.20
  6. Step 6: Final answer
    x = 101,313.30

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1.5x scale

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.