Home / 120,257.87-180,449.05-87,250.37

Finding the Fourth Proportional to 120,257.87, 180,449.05 and 87,250.37

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Solution

The fourth proportional to 120,257.87, 180,449.05 and 87,250.37 is: 130,920.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,257.87 : 180,449.05 = 87,250.37 : x
  2. Step 2: Convert to fraction form
    120,257.87/180,449.05 = 87,250.37/x
  3. Step 3: Cross multiply
    120,257.87x = 180,449.05 × 87,250.37
  4. Step 4: Simplify right side
    120,257.87x = 15,744,245,258.28
  5. Step 5: Solve for x
    x = 15,744,245,258.28/120,257.87
  6. Step 6: Final answer
    x = 130,920.71

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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.