Home / 82,170-130,787

Finding the Third Proportional to 82,170 and 130,787

Calculator

Solution

The third proportional to 82,170 and 130,787 is: 208,168.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,170 : 130,787 = 130,787 : x
  2. Step 2: Convert to fraction form
    82,170/130,787 = 130,787/x
  3. Step 3: Cross multiply
    82,170x = 130,787 × 130,787
  4. Step 4: Simplify right side
    82,170x = 17,105,239,369
  5. Step 5: Solve for x
    x = 17,105,239,369/82,170
  6. Step 6: Final answer
    x = 208,168.91

Related Problems

Find third proportional to 41,085 and 65,393.50
Half scale
Find third proportional to 164,340 and 261,574
Double scale
Find third proportional to 82,172 and 130,790
Similar ratio
Find third proportional to 123,255 and 196,180.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.