Home / 81,889-178,754

Finding the Third Proportional to 81,889 and 178,754

Calculator

Solution

The third proportional to 81,889 and 178,754 is: 390,198.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,889 : 178,754 = 178,754 : x
  2. Step 2: Convert to fraction form
    81,889/178,754 = 178,754/x
  3. Step 3: Cross multiply
    81,889x = 178,754 × 178,754
  4. Step 4: Simplify right side
    81,889x = 31,952,992,516
  5. Step 5: Solve for x
    x = 31,952,992,516/81,889
  6. Step 6: Final answer
    x = 390,198.84

Related Problems

Find third proportional to 40,944.50 and 89,377
Half scale
Find third proportional to 163,778 and 357,508
Double scale
Find third proportional to 81,891 and 178,758
Similar ratio
Find third proportional to 122,833.50 and 268,131
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.