Home / 54,902-128,375

Finding the Third Proportional to 54,902 and 128,375

Calculator

Solution

The third proportional to 54,902 and 128,375 is: 300,173.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,902 : 128,375 = 128,375 : x
  2. Step 2: Convert to fraction form
    54,902/128,375 = 128,375/x
  3. Step 3: Cross multiply
    54,902x = 128,375 × 128,375
  4. Step 4: Simplify right side
    54,902x = 16,480,140,625
  5. Step 5: Solve for x
    x = 16,480,140,625/54,902
  6. Step 6: Final answer
    x = 300,173.78

Related Problems

Find third proportional to 27,451 and 64,187.50
Half scale
Find third proportional to 109,804 and 256,750
Double scale
Find third proportional to 54,904 and 128,380
Similar ratio
Find third proportional to 82,353 and 192,562.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.