Home / 81,810-115,179

Finding the Third Proportional to 81,810 and 115,179

Calculator

Solution

The third proportional to 81,810 and 115,179 is: 162,158.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,810 : 115,179 = 115,179 : x
  2. Step 2: Convert to fraction form
    81,810/115,179 = 115,179/x
  3. Step 3: Cross multiply
    81,810x = 115,179 × 115,179
  4. Step 4: Simplify right side
    81,810x = 13,266,202,041
  5. Step 5: Solve for x
    x = 13,266,202,041/81,810
  6. Step 6: Final answer
    x = 162,158.69

Related Problems

Find third proportional to 40,905 and 57,589.50
Half scale
Find third proportional to 163,620 and 230,358
Double scale
Find third proportional to 81,812 and 115,182
Similar ratio
Find third proportional to 122,715 and 172,768.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.