Home / 82,842-128,511

Finding the Third Proportional to 82,842 and 128,511

Calculator

Solution

The third proportional to 82,842 and 128,511 is: 199,356.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,842 : 128,511 = 128,511 : x
  2. Step 2: Convert to fraction form
    82,842/128,511 = 128,511/x
  3. Step 3: Cross multiply
    82,842x = 128,511 × 128,511
  4. Step 4: Simplify right side
    82,842x = 16,515,077,121
  5. Step 5: Solve for x
    x = 16,515,077,121/82,842
  6. Step 6: Final answer
    x = 199,356.33

Related Problems

Find third proportional to 41,421 and 64,255.50
Half scale
Find third proportional to 165,684 and 257,022
Double scale
Find third proportional to 82,844 and 128,514
Similar ratio
Find third proportional to 124,263 and 192,766.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.