Home / 86,120-189,216

Finding the Third Proportional to 86,120 and 189,216

Calculator

Solution

The third proportional to 86,120 and 189,216 is: 415,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,120 : 189,216 = 189,216 : x
  2. Step 2: Convert to fraction form
    86,120/189,216 = 189,216/x
  3. Step 3: Cross multiply
    86,120x = 189,216 × 189,216
  4. Step 4: Simplify right side
    86,120x = 35,802,694,656
  5. Step 5: Solve for x
    x = 35,802,694,656/86,120
  6. Step 6: Final answer
    x = 415,730.31

Related Problems

Find third proportional to 43,060 and 94,608
Half scale
Find third proportional to 172,240 and 378,432
Double scale
Find third proportional to 86,122 and 189,220
Similar ratio
Find third proportional to 129,180 and 283,824
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.