Home / 81,236-121,177

Finding the Third Proportional to 81,236 and 121,177

Calculator

Solution

The third proportional to 81,236 and 121,177 is: 180,755.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,236 : 121,177 = 121,177 : x
  2. Step 2: Convert to fraction form
    81,236/121,177 = 121,177/x
  3. Step 3: Cross multiply
    81,236x = 121,177 × 121,177
  4. Step 4: Simplify right side
    81,236x = 14,683,865,329
  5. Step 5: Solve for x
    x = 14,683,865,329/81,236
  6. Step 6: Final answer
    x = 180,755.64

Related Problems

Find third proportional to 40,618 and 60,588.50
Half scale
Find third proportional to 162,472 and 242,354
Double scale
Find third proportional to 81,238 and 121,180
Similar ratio
Find third proportional to 121,854 and 181,765.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.