Home / 43.50-108.75

Finding the Third Proportional to 43.50 and 108.75

Calculator

Solution

The third proportional to 43.50 and 108.75 is: 271.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.50 : 108.75 = 108.75 : x
  2. Step 2: Convert to fraction form
    43.50/108.75 = 108.75/x
  3. Step 3: Cross multiply
    43.50x = 108.75 × 108.75
  4. Step 4: Simplify right side
    43.50x = 11,826.56
  5. Step 5: Solve for x
    x = 11,826.56/43.50
  6. Step 6: Final answer
    x = 271.88

Related Problems

Find third proportional to 21.75 and 54.38
Half scale
Find third proportional to 87 and 217.50
Double scale
Find third proportional to 46 and 114
Similar ratio
Find third proportional to 65.25 and 163.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.