Home / 90,279-135,423

Finding the Third Proportional to 90,279 and 135,423

Calculator

Solution

The third proportional to 90,279 and 135,423 is: 203,141.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,279 : 135,423 = 135,423 : x
  2. Step 2: Convert to fraction form
    90,279/135,423 = 135,423/x
  3. Step 3: Cross multiply
    90,279x = 135,423 × 135,423
  4. Step 4: Simplify right side
    90,279x = 18,339,388,929
  5. Step 5: Solve for x
    x = 18,339,388,929/90,279
  6. Step 6: Final answer
    x = 203,141.25

Related Problems

Find third proportional to 45,139.50 and 67,711.50
Half scale
Find third proportional to 180,558 and 270,846
Double scale
Find third proportional to 90,281 and 135,426
Similar ratio
Find third proportional to 135,418.50 and 203,134.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.