Home / 87,678-191,718

Finding the Third Proportional to 87,678 and 191,718

Calculator

Solution

The third proportional to 87,678 and 191,718 is: 419,213.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,678 : 191,718 = 191,718 : x
  2. Step 2: Convert to fraction form
    87,678/191,718 = 191,718/x
  3. Step 3: Cross multiply
    87,678x = 191,718 × 191,718
  4. Step 4: Simplify right side
    87,678x = 36,755,791,524
  5. Step 5: Solve for x
    x = 36,755,791,524/87,678
  6. Step 6: Final answer
    x = 419,213.39

Related Problems

Find third proportional to 43,839 and 95,859
Half scale
Find third proportional to 175,356 and 383,436
Double scale
Find third proportional to 87,680 and 191,722
Similar ratio
Find third proportional to 131,517 and 287,577
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.