Home / 78,802-172,913

Finding the Third Proportional to 78,802 and 172,913

Calculator

Solution

The third proportional to 78,802 and 172,913 is: 379,418.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,802 : 172,913 = 172,913 : x
  2. Step 2: Convert to fraction form
    78,802/172,913 = 172,913/x
  3. Step 3: Cross multiply
    78,802x = 172,913 × 172,913
  4. Step 4: Simplify right side
    78,802x = 29,898,905,569
  5. Step 5: Solve for x
    x = 29,898,905,569/78,802
  6. Step 6: Final answer
    x = 379,418.11

Related Problems

Find third proportional to 39,401 and 86,456.50
Half scale
Find third proportional to 157,604 and 345,826
Double scale
Find third proportional to 78,804 and 172,917
Similar ratio
Find third proportional to 118,203 and 259,369.50
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.