Home / 77,781-170,691

Finding the Third Proportional to 77,781 and 170,691

Calculator

Solution

The third proportional to 77,781 and 170,691 is: 374,582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,781 : 170,691 = 170,691 : x
  2. Step 2: Convert to fraction form
    77,781/170,691 = 170,691/x
  3. Step 3: Cross multiply
    77,781x = 170,691 × 170,691
  4. Step 4: Simplify right side
    77,781x = 29,135,417,481
  5. Step 5: Solve for x
    x = 29,135,417,481/77,781
  6. Step 6: Final answer
    x = 374,582.71

Related Problems

Find third proportional to 38,890.50 and 85,345.50
Half scale
Find third proportional to 155,562 and 341,382
Double scale
Find third proportional to 77,783 and 170,695
Similar ratio
Find third proportional to 116,671.50 and 256,036.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.