Home / 66,758-135,358

Finding the Third Proportional to 66,758 and 135,358

Calculator

Solution

The third proportional to 66,758 and 135,358 is: 274,450.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,758 : 135,358 = 135,358 : x
  2. Step 2: Convert to fraction form
    66,758/135,358 = 135,358/x
  3. Step 3: Cross multiply
    66,758x = 135,358 × 135,358
  4. Step 4: Simplify right side
    66,758x = 18,321,788,164
  5. Step 5: Solve for x
    x = 18,321,788,164/66,758
  6. Step 6: Final answer
    x = 274,450.82

Related Problems

Find third proportional to 33,379 and 67,679
Half scale
Find third proportional to 133,516 and 270,716
Double scale
Find third proportional to 66,760 and 135,362
Similar ratio
Find third proportional to 100,137 and 203,037
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.