Home / 121,776-191,080

Finding the Third Proportional to 121,776 and 191,080

Calculator

Solution

The third proportional to 121,776 and 191,080 is: 299,825.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,776 : 191,080 = 191,080 : x
  2. Step 2: Convert to fraction form
    121,776/191,080 = 191,080/x
  3. Step 3: Cross multiply
    121,776x = 191,080 × 191,080
  4. Step 4: Simplify right side
    121,776x = 36,511,566,400
  5. Step 5: Solve for x
    x = 36,511,566,400/121,776
  6. Step 6: Final answer
    x = 299,825.63

Related Problems

Find third proportional to 60,888 and 95,540
Half scale
Find third proportional to 243,552 and 382,160
Double scale
Find third proportional to 121,778 and 191,083
Similar ratio
Find third proportional to 182,664 and 286,620
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.