Home / 87,008-138,286

Finding the Third Proportional to 87,008 and 138,286

Calculator

Solution

The third proportional to 87,008 and 138,286 is: 219,784.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,008 : 138,286 = 138,286 : x
  2. Step 2: Convert to fraction form
    87,008/138,286 = 138,286/x
  3. Step 3: Cross multiply
    87,008x = 138,286 × 138,286
  4. Step 4: Simplify right side
    87,008x = 19,123,017,796
  5. Step 5: Solve for x
    x = 19,123,017,796/87,008
  6. Step 6: Final answer
    x = 219,784.59

Related Problems

Find third proportional to 43,504 and 69,143
Half scale
Find third proportional to 174,016 and 276,572
Double scale
Find third proportional to 87,010 and 138,289
Similar ratio
Find third proportional to 130,512 and 207,429
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.