Home / 67,167.55-100,778.60-43,178.68

Finding the Fourth Proportional to 67,167.55, 100,778.60 and 43,178.68

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Solution

The fourth proportional to 67,167.55, 100,778.60 and 43,178.68 is: 64,785.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,167.55 : 100,778.60 = 43,178.68 : x
  2. Step 2: Convert to fraction form
    67,167.55/100,778.60 = 43,178.68/x
  3. Step 3: Cross multiply
    67,167.55x = 100,778.60 × 43,178.68
  4. Step 4: Simplify right side
    67,167.55x = 4,351,486,920.25
  5. Step 5: Solve for x
    x = 4,351,486,920.25/67,167.55
  6. Step 6: Final answer
    x = 64,785.55

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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.