Home / 38,270-81,172

Finding the Third Proportional to 38,270 and 81,172

Calculator

Solution

The third proportional to 38,270 and 81,172 is: 172,168.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,270 : 81,172 = 81,172 : x
  2. Step 2: Convert to fraction form
    38,270/81,172 = 81,172/x
  3. Step 3: Cross multiply
    38,270x = 81,172 × 81,172
  4. Step 4: Simplify right side
    38,270x = 6,588,893,584
  5. Step 5: Solve for x
    x = 6,588,893,584/38,270
  6. Step 6: Final answer
    x = 172,168.63

Related Problems

Find third proportional to 19,135 and 40,586
Half scale
Find third proportional to 76,540 and 162,344
Double scale
Find third proportional to 38,272 and 81,176
Similar ratio
Find third proportional to 57,405 and 121,758
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.