Home / 54,702-128,790

Finding the Third Proportional to 54,702 and 128,790

Calculator

Solution

The third proportional to 54,702 and 128,790 is: 303,222.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,702 : 128,790 = 128,790 : x
  2. Step 2: Convert to fraction form
    54,702/128,790 = 128,790/x
  3. Step 3: Cross multiply
    54,702x = 128,790 × 128,790
  4. Step 4: Simplify right side
    54,702x = 16,586,864,100
  5. Step 5: Solve for x
    x = 16,586,864,100/54,702
  6. Step 6: Final answer
    x = 303,222.26

Related Problems

Find third proportional to 27,351 and 64,395
Half scale
Find third proportional to 109,404 and 257,580
Double scale
Find third proportional to 54,704 and 128,795
Similar ratio
Find third proportional to 82,053 and 193,185
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.