Home / 61,064-128,687

Finding the Third Proportional to 61,064 and 128,687

Calculator

Solution

The third proportional to 61,064 and 128,687 is: 271,196.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,064 : 128,687 = 128,687 : x
  2. Step 2: Convert to fraction form
    61,064/128,687 = 128,687/x
  3. Step 3: Cross multiply
    61,064x = 128,687 × 128,687
  4. Step 4: Simplify right side
    61,064x = 16,560,343,969
  5. Step 5: Solve for x
    x = 16,560,343,969/61,064
  6. Step 6: Final answer
    x = 271,196.51

Related Problems

Find third proportional to 30,532 and 64,343.50
Half scale
Find third proportional to 122,128 and 257,374
Double scale
Find third proportional to 61,066 and 128,691
Similar ratio
Find third proportional to 91,596 and 193,030.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.