Home / 91,760-129,215

Finding the Third Proportional to 91,760 and 129,215

Calculator

Solution

The third proportional to 91,760 and 129,215 is: 181,958.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,760 : 129,215 = 129,215 : x
  2. Step 2: Convert to fraction form
    91,760/129,215 = 129,215/x
  3. Step 3: Cross multiply
    91,760x = 129,215 × 129,215
  4. Step 4: Simplify right side
    91,760x = 16,696,516,225
  5. Step 5: Solve for x
    x = 16,696,516,225/91,760
  6. Step 6: Final answer
    x = 181,958.55

Related Problems

Find third proportional to 45,880 and 64,607.50
Half scale
Find third proportional to 183,520 and 258,430
Double scale
Find third proportional to 91,762 and 129,218
Similar ratio
Find third proportional to 137,640 and 193,822.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.