Home / 123,903-172,395

Finding the Third Proportional to 123,903 and 172,395

Calculator

Solution

The third proportional to 123,903 and 172,395 is: 239,865.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,903 : 172,395 = 172,395 : x
  2. Step 2: Convert to fraction form
    123,903/172,395 = 172,395/x
  3. Step 3: Cross multiply
    123,903x = 172,395 × 172,395
  4. Step 4: Simplify right side
    123,903x = 29,720,036,025
  5. Step 5: Solve for x
    x = 29,720,036,025/123,903
  6. Step 6: Final answer
    x = 239,865.35

Related Problems

Find third proportional to 61,951.50 and 86,197.50
Half scale
Find third proportional to 247,806 and 344,790
Double scale
Find third proportional to 123,905 and 172,398
Similar ratio
Find third proportional to 185,854.50 and 258,592.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.