Home / 81,836-125,128

Finding the Third Proportional to 81,836 and 125,128

Calculator

Solution

The third proportional to 81,836 and 125,128 is: 191,321.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,836 : 125,128 = 125,128 : x
  2. Step 2: Convert to fraction form
    81,836/125,128 = 125,128/x
  3. Step 3: Cross multiply
    81,836x = 125,128 × 125,128
  4. Step 4: Simplify right side
    81,836x = 15,657,016,384
  5. Step 5: Solve for x
    x = 15,657,016,384/81,836
  6. Step 6: Final answer
    x = 191,321.87

Related Problems

Find third proportional to 40,918 and 62,564
Half scale
Find third proportional to 163,672 and 250,256
Double scale
Find third proportional to 81,838 and 125,131
Similar ratio
Find third proportional to 122,754 and 187,692
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.