Home / 81,450-131,429

Finding the Third Proportional to 81,450 and 131,429

Calculator

Solution

The third proportional to 81,450 and 131,429 is: 212,075.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,450 : 131,429 = 131,429 : x
  2. Step 2: Convert to fraction form
    81,450/131,429 = 131,429/x
  3. Step 3: Cross multiply
    81,450x = 131,429 × 131,429
  4. Step 4: Simplify right side
    81,450x = 17,273,582,041
  5. Step 5: Solve for x
    x = 17,273,582,041/81,450
  6. Step 6: Final answer
    x = 212,075.90

Related Problems

Find third proportional to 40,725 and 65,714.50
Half scale
Find third proportional to 162,900 and 262,858
Double scale
Find third proportional to 81,452 and 131,432
Similar ratio
Find third proportional to 122,175 and 197,143.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.