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Finding the Fourth Proportional to 101,680.62, 140,246.39 and 67,185.39

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Solution

The fourth proportional to 101,680.62, 140,246.39 and 67,185.39 is: 92,667.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,680.62 : 140,246.39 = 67,185.39 : x
  2. Step 2: Convert to fraction form
    101,680.62/140,246.39 = 67,185.39/x
  3. Step 3: Cross multiply
    101,680.62x = 140,246.39 × 67,185.39
  4. Step 4: Simplify right side
    101,680.62x = 9,422,508,329.77
  5. Step 5: Solve for x
    x = 9,422,508,329.77/101,680.62
  6. Step 6: Final answer
    x = 92,667.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.