Home / 82,503-128,682

Finding the Third Proportional to 82,503 and 128,682

Calculator

Solution

The third proportional to 82,503 and 128,682 is: 200,708.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,503 : 128,682 = 128,682 : x
  2. Step 2: Convert to fraction form
    82,503/128,682 = 128,682/x
  3. Step 3: Cross multiply
    82,503x = 128,682 × 128,682
  4. Step 4: Simplify right side
    82,503x = 16,559,057,124
  5. Step 5: Solve for x
    x = 16,559,057,124/82,503
  6. Step 6: Final answer
    x = 200,708.55

Related Problems

Find third proportional to 41,251.50 and 64,341
Half scale
Find third proportional to 165,006 and 257,364
Double scale
Find third proportional to 82,505 and 128,685
Similar ratio
Find third proportional to 123,754.50 and 193,023
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.