Home / 81,186-121,449

Finding the Third Proportional to 81,186 and 121,449

Calculator

Solution

The third proportional to 81,186 and 121,449 is: 181,679.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,186 : 121,449 = 121,449 : x
  2. Step 2: Convert to fraction form
    81,186/121,449 = 121,449/x
  3. Step 3: Cross multiply
    81,186x = 121,449 × 121,449
  4. Step 4: Simplify right side
    81,186x = 14,749,859,601
  5. Step 5: Solve for x
    x = 14,749,859,601/81,186
  6. Step 6: Final answer
    x = 181,679.84

Related Problems

Find third proportional to 40,593 and 60,724.50
Half scale
Find third proportional to 162,372 and 242,898
Double scale
Find third proportional to 81,188 and 121,452
Similar ratio
Find third proportional to 121,779 and 182,173.50
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.