Home / 61,151-135,420

Finding the Third Proportional to 61,151 and 135,420

Calculator

Solution

The third proportional to 61,151 and 135,420 is: 299,890.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,151 : 135,420 = 135,420 : x
  2. Step 2: Convert to fraction form
    61,151/135,420 = 135,420/x
  3. Step 3: Cross multiply
    61,151x = 135,420 × 135,420
  4. Step 4: Simplify right side
    61,151x = 18,338,576,400
  5. Step 5: Solve for x
    x = 18,338,576,400/61,151
  6. Step 6: Final answer
    x = 299,890.05

Related Problems

Find third proportional to 30,575.50 and 67,710
Half scale
Find third proportional to 122,302 and 270,840
Double scale
Find third proportional to 61,153 and 135,424
Similar ratio
Find third proportional to 91,726.50 and 203,130
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.