Home / 81,648-177,876

Finding the Third Proportional to 81,648 and 177,876

Calculator

Solution

The third proportional to 81,648 and 177,876 is: 387,515.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648 : 177,876 = 177,876 : x
  2. Step 2: Convert to fraction form
    81,648/177,876 = 177,876/x
  3. Step 3: Cross multiply
    81,648x = 177,876 × 177,876
  4. Step 4: Simplify right side
    81,648x = 31,639,871,376
  5. Step 5: Solve for x
    x = 31,639,871,376/81,648
  6. Step 6: Final answer
    x = 387,515.57

Related Problems

Find third proportional to 40,824 and 88,938
Half scale
Find third proportional to 163,296 and 355,752
Double scale
Find third proportional to 81,650 and 177,880
Similar ratio
Find third proportional to 122,472 and 266,814
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.