Home / 81,312-126,724

Finding the Third Proportional to 81,312 and 126,724

Calculator

Solution

The third proportional to 81,312 and 126,724 is: 197,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,312 : 126,724 = 126,724 : x
  2. Step 2: Convert to fraction form
    81,312/126,724 = 126,724/x
  3. Step 3: Cross multiply
    81,312x = 126,724 × 126,724
  4. Step 4: Simplify right side
    81,312x = 16,058,972,176
  5. Step 5: Solve for x
    x = 16,058,972,176/81,312
  6. Step 6: Final answer
    x = 197,498.18

Related Problems

Find third proportional to 40,656 and 63,362
Half scale
Find third proportional to 162,624 and 253,448
Double scale
Find third proportional to 81,314 and 126,727
Similar ratio
Find third proportional to 121,968 and 190,086
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.