Home / 129,102-279,653

Finding the Third Proportional to 129,102 and 279,653

Calculator

Solution

The third proportional to 129,102 and 279,653 is: 605,767.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,102 : 279,653 = 279,653 : x
  2. Step 2: Convert to fraction form
    129,102/279,653 = 279,653/x
  3. Step 3: Cross multiply
    129,102x = 279,653 × 279,653
  4. Step 4: Simplify right side
    129,102x = 78,205,800,409
  5. Step 5: Solve for x
    x = 78,205,800,409/129,102
  6. Step 6: Final answer
    x = 605,767.54

Related Problems

Find third proportional to 64,551 and 139,826.50
Half scale
Find third proportional to 258,204 and 559,306
Double scale
Find third proportional to 129,104 and 279,657
Similar ratio
Find third proportional to 193,653 and 419,479.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.