Home / 77,915-170,410

Finding the Third Proportional to 77,915 and 170,410

Calculator

Solution

The third proportional to 77,915 and 170,410 is: 372,708.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,915 : 170,410 = 170,410 : x
  2. Step 2: Convert to fraction form
    77,915/170,410 = 170,410/x
  3. Step 3: Cross multiply
    77,915x = 170,410 × 170,410
  4. Step 4: Simplify right side
    77,915x = 29,039,568,100
  5. Step 5: Solve for x
    x = 29,039,568,100/77,915
  6. Step 6: Final answer
    x = 372,708.31

Related Problems

Find third proportional to 38,957.50 and 85,205
Half scale
Find third proportional to 155,830 and 340,820
Double scale
Find third proportional to 77,917 and 170,414
Similar ratio
Find third proportional to 116,872.50 and 255,615
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.