Home / 85,142-128,901

Finding the Third Proportional to 85,142 and 128,901

Calculator

Solution

The third proportional to 85,142 and 128,901 is: 195,150.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,142 : 128,901 = 128,901 : x
  2. Step 2: Convert to fraction form
    85,142/128,901 = 128,901/x
  3. Step 3: Cross multiply
    85,142x = 128,901 × 128,901
  4. Step 4: Simplify right side
    85,142x = 16,615,467,801
  5. Step 5: Solve for x
    x = 16,615,467,801/85,142
  6. Step 6: Final answer
    x = 195,150.08

Related Problems

Find third proportional to 42,571 and 64,450.50
Half scale
Find third proportional to 170,284 and 257,802
Double scale
Find third proportional to 85,144 and 128,904
Similar ratio
Find third proportional to 127,713 and 193,351.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.