Home / 78,624-172,692

Finding the Third Proportional to 78,624 and 172,692

Calculator

Solution

The third proportional to 78,624 and 172,692 is: 379,305.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,624 : 172,692 = 172,692 : x
  2. Step 2: Convert to fraction form
    78,624/172,692 = 172,692/x
  3. Step 3: Cross multiply
    78,624x = 172,692 × 172,692
  4. Step 4: Simplify right side
    78,624x = 29,822,526,864
  5. Step 5: Solve for x
    x = 29,822,526,864/78,624
  6. Step 6: Final answer
    x = 379,305.64

Related Problems

Find third proportional to 39,312 and 86,346
Half scale
Find third proportional to 157,248 and 345,384
Double scale
Find third proportional to 78,626 and 172,696
Similar ratio
Find third proportional to 117,936 and 259,038
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.