Home / 69,501.11-103,357.56-67,286.78

Finding the Fourth Proportional to 69,501.11, 103,357.56 and 67,286.78

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Solution

The fourth proportional to 69,501.11, 103,357.56 and 67,286.78 is: 100,064.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,501.11 : 103,357.56 = 67,286.78 : x
  2. Step 2: Convert to fraction form
    69,501.11/103,357.56 = 67,286.78/x
  3. Step 3: Cross multiply
    69,501.11x = 103,357.56 × 67,286.78
  4. Step 4: Simplify right side
    69,501.11x = 6,954,597,401.06
  5. Step 5: Solve for x
    x = 6,954,597,401.06/69,501.11
  6. Step 6: Final answer
    x = 100,064.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.