Home / 81,390-169,017

Finding the Third Proportional to 81,390 and 169,017

Calculator

Solution

The third proportional to 81,390 and 169,017 is: 350,985.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,390 : 169,017 = 169,017 : x
  2. Step 2: Convert to fraction form
    81,390/169,017 = 169,017/x
  3. Step 3: Cross multiply
    81,390x = 169,017 × 169,017
  4. Step 4: Simplify right side
    81,390x = 28,566,746,289
  5. Step 5: Solve for x
    x = 28,566,746,289/81,390
  6. Step 6: Final answer
    x = 350,985.95

Related Problems

Find third proportional to 40,695 and 84,508.50
Half scale
Find third proportional to 162,780 and 338,034
Double scale
Find third proportional to 81,392 and 169,021
Similar ratio
Find third proportional to 122,085 and 253,525.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.