Home / 120,229.35-165,886.68-77,736.75

Finding the Fourth Proportional to 120,229.35, 165,886.68 and 77,736.75

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Solution

The fourth proportional to 120,229.35, 165,886.68 and 77,736.75 is: 107,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,229.35 : 165,886.68 = 77,736.75 : x
  2. Step 2: Convert to fraction form
    120,229.35/165,886.68 = 77,736.75/x
  3. Step 3: Cross multiply
    120,229.35x = 165,886.68 × 77,736.75
  4. Step 4: Simplify right side
    120,229.35x = 12,895,491,371.49
  5. Step 5: Solve for x
    x = 12,895,491,371.49/120,229.35
  6. Step 6: Final answer
    x = 107,257.43

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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.