Home / 128,145-203,662

Finding the Third Proportional to 128,145 and 203,662

Calculator

Solution

The third proportional to 128,145 and 203,662 is: 323,681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,145 : 203,662 = 203,662 : x
  2. Step 2: Convert to fraction form
    128,145/203,662 = 203,662/x
  3. Step 3: Cross multiply
    128,145x = 203,662 × 203,662
  4. Step 4: Simplify right side
    128,145x = 41,478,210,244
  5. Step 5: Solve for x
    x = 41,478,210,244/128,145
  6. Step 6: Final answer
    x = 323,681.85

Related Problems

Find third proportional to 64,072.50 and 101,831
Half scale
Find third proportional to 256,290 and 407,324
Double scale
Find third proportional to 128,147 and 203,665
Similar ratio
Find third proportional to 192,217.50 and 305,493
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.