Home / 85,683-128,020

Finding the Third Proportional to 85,683 and 128,020

Calculator

Solution

The third proportional to 85,683 and 128,020 is: 191,276.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,683 : 128,020 = 128,020 : x
  2. Step 2: Convert to fraction form
    85,683/128,020 = 128,020/x
  3. Step 3: Cross multiply
    85,683x = 128,020 × 128,020
  4. Step 4: Simplify right side
    85,683x = 16,389,120,400
  5. Step 5: Solve for x
    x = 16,389,120,400/85,683
  6. Step 6: Final answer
    x = 191,276.22

Related Problems

Find third proportional to 42,841.50 and 64,010
Half scale
Find third proportional to 171,366 and 256,040
Double scale
Find third proportional to 85,685 and 128,023
Similar ratio
Find third proportional to 128,524.50 and 192,030
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.