Home / 85,568.20-117,920.82-74,370.76

Finding the Fourth Proportional to 85,568.20, 117,920.82 and 74,370.76

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Solution

The fourth proportional to 85,568.20, 117,920.82 and 74,370.76 is: 102,489.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,568.20 : 117,920.82 = 74,370.76 : x
  2. Step 2: Convert to fraction form
    85,568.20/117,920.82 = 74,370.76/x
  3. Step 3: Cross multiply
    85,568.20x = 117,920.82 × 74,370.76
  4. Step 4: Simplify right side
    85,568.20x = 8,769,861,003.22
  5. Step 5: Solve for x
    x = 8,769,861,003.22/85,568.20
  6. Step 6: Final answer
    x = 102,489.72

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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.