Home / 57,090-126,420

Finding the Third Proportional to 57,090 and 126,420

Calculator

Solution

The third proportional to 57,090 and 126,420 is: 279,944.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,090 : 126,420 = 126,420 : x
  2. Step 2: Convert to fraction form
    57,090/126,420 = 126,420/x
  3. Step 3: Cross multiply
    57,090x = 126,420 × 126,420
  4. Step 4: Simplify right side
    57,090x = 15,982,016,400
  5. Step 5: Solve for x
    x = 15,982,016,400/57,090
  6. Step 6: Final answer
    x = 279,944.24

Related Problems

Find third proportional to 28,545 and 63,210
Half scale
Find third proportional to 114,180 and 252,840
Double scale
Find third proportional to 57,092 and 126,424
Similar ratio
Find third proportional to 85,635 and 189,630
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.