Home / 61,682-128,211

Finding the Third Proportional to 61,682 and 128,211

Calculator

Solution

The third proportional to 61,682 and 128,211 is: 266,496.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,682 : 128,211 = 128,211 : x
  2. Step 2: Convert to fraction form
    61,682/128,211 = 128,211/x
  3. Step 3: Cross multiply
    61,682x = 128,211 × 128,211
  4. Step 4: Simplify right side
    61,682x = 16,438,060,521
  5. Step 5: Solve for x
    x = 16,438,060,521/61,682
  6. Step 6: Final answer
    x = 266,496.88

Related Problems

Find third proportional to 30,841 and 64,105.50
Half scale
Find third proportional to 123,364 and 256,422
Double scale
Find third proportional to 61,684 and 128,215
Similar ratio
Find third proportional to 92,523 and 192,316.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.