Home / 128,550-197,712

Finding the Third Proportional to 128,550 and 197,712

Calculator

Solution

The third proportional to 128,550 and 197,712 is: 304,084.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,550 : 197,712 = 197,712 : x
  2. Step 2: Convert to fraction form
    128,550/197,712 = 197,712/x
  3. Step 3: Cross multiply
    128,550x = 197,712 × 197,712
  4. Step 4: Simplify right side
    128,550x = 39,090,034,944
  5. Step 5: Solve for x
    x = 39,090,034,944/128,550
  6. Step 6: Final answer
    x = 304,084.29

Related Problems

Find third proportional to 64,275 and 98,856
Half scale
Find third proportional to 257,100 and 395,424
Double scale
Find third proportional to 128,552 and 197,715
Similar ratio
Find third proportional to 192,825 and 296,568
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.