Home / 55,459-121,979

Finding the Third Proportional to 55,459 and 121,979

Calculator

Solution

The third proportional to 55,459 and 121,979 is: 268,286.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,459 : 121,979 = 121,979 : x
  2. Step 2: Convert to fraction form
    55,459/121,979 = 121,979/x
  3. Step 3: Cross multiply
    55,459x = 121,979 × 121,979
  4. Step 4: Simplify right side
    55,459x = 14,878,876,441
  5. Step 5: Solve for x
    x = 14,878,876,441/55,459
  6. Step 6: Final answer
    x = 268,286.06

Related Problems

Find third proportional to 27,729.50 and 60,989.50
Half scale
Find third proportional to 110,918 and 243,958
Double scale
Find third proportional to 55,461 and 121,983
Similar ratio
Find third proportional to 83,188.50 and 182,968.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.