Home / 81,578-172,948

Finding the Third Proportional to 81,578 and 172,948

Calculator

Solution

The third proportional to 81,578 and 172,948 is: 366,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,578 : 172,948 = 172,948 : x
  2. Step 2: Convert to fraction form
    81,578/172,948 = 172,948/x
  3. Step 3: Cross multiply
    81,578x = 172,948 × 172,948
  4. Step 4: Simplify right side
    81,578x = 29,911,010,704
  5. Step 5: Solve for x
    x = 29,911,010,704/81,578
  6. Step 6: Final answer
    x = 366,655.36

Related Problems

Find third proportional to 40,789 and 86,474
Half scale
Find third proportional to 163,156 and 345,896
Double scale
Find third proportional to 81,580 and 172,952
Similar ratio
Find third proportional to 122,367 and 259,422
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.