Home / 121,778-191,083

Finding the Third Proportional to 121,778 and 191,083

Calculator

Solution

The third proportional to 121,778 and 191,083 is: 299,830.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,778 : 191,083 = 191,083 : x
  2. Step 2: Convert to fraction form
    121,778/191,083 = 191,083/x
  3. Step 3: Cross multiply
    121,778x = 191,083 × 191,083
  4. Step 4: Simplify right side
    121,778x = 36,512,712,889
  5. Step 5: Solve for x
    x = 36,512,712,889/121,778
  6. Step 6: Final answer
    x = 299,830.12

Related Problems

Find third proportional to 60,889 and 95,541.50
Half scale
Find third proportional to 243,556 and 382,166
Double scale
Find third proportional to 121,780 and 191,086
Similar ratio
Find third proportional to 182,667 and 286,624.50
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.