Home / 67,079-138,478

Finding the Third Proportional to 67,079 and 138,478

Calculator

Solution

The third proportional to 67,079 and 138,478 is: 285,874.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,079 : 138,478 = 138,478 : x
  2. Step 2: Convert to fraction form
    67,079/138,478 = 138,478/x
  3. Step 3: Cross multiply
    67,079x = 138,478 × 138,478
  4. Step 4: Simplify right side
    67,079x = 19,176,156,484
  5. Step 5: Solve for x
    x = 19,176,156,484/67,079
  6. Step 6: Final answer
    x = 285,874.22

Related Problems

Find third proportional to 33,539.50 and 69,239
Half scale
Find third proportional to 134,158 and 276,956
Double scale
Find third proportional to 67,081 and 138,482
Similar ratio
Find third proportional to 100,618.50 and 207,717
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.