Home / 78,458-172,750

Finding the Third Proportional to 78,458 and 172,750

Calculator

Solution

The third proportional to 78,458 and 172,750 is: 380,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,458 : 172,750 = 172,750 : x
  2. Step 2: Convert to fraction form
    78,458/172,750 = 172,750/x
  3. Step 3: Cross multiply
    78,458x = 172,750 × 172,750
  4. Step 4: Simplify right side
    78,458x = 29,842,562,500
  5. Step 5: Solve for x
    x = 29,842,562,500/78,458
  6. Step 6: Final answer
    x = 380,363.54

Related Problems

Find third proportional to 39,229 and 86,375
Half scale
Find third proportional to 156,916 and 345,500
Double scale
Find third proportional to 78,460 and 172,754
Similar ratio
Find third proportional to 117,687 and 259,125
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.