Home / 81,549-172,899

Finding the Third Proportional to 81,549 and 172,899

Calculator

Solution

The third proportional to 81,549 and 172,899 is: 366,577.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,549 : 172,899 = 172,899 : x
  2. Step 2: Convert to fraction form
    81,549/172,899 = 172,899/x
  3. Step 3: Cross multiply
    81,549x = 172,899 × 172,899
  4. Step 4: Simplify right side
    81,549x = 29,894,064,201
  5. Step 5: Solve for x
    x = 29,894,064,201/81,549
  6. Step 6: Final answer
    x = 366,577.94

Related Problems

Find third proportional to 40,774.50 and 86,449.50
Half scale
Find third proportional to 163,098 and 345,798
Double scale
Find third proportional to 81,551 and 172,903
Similar ratio
Find third proportional to 122,323.50 and 259,348.50
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.