Home / 71.25-108.75

Finding the Third Proportional to 71.25 and 108.75

Calculator

Solution

The third proportional to 71.25 and 108.75 is: 165.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.25 : 108.75 = 108.75 : x
  2. Step 2: Convert to fraction form
    71.25/108.75 = 108.75/x
  3. Step 3: Cross multiply
    71.25x = 108.75 × 108.75
  4. Step 4: Simplify right side
    71.25x = 11,826.56
  5. Step 5: Solve for x
    x = 11,826.56/71.25
  6. Step 6: Final answer
    x = 165.99

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.