Home / 81,686-130,065

Finding the Third Proportional to 81,686 and 130,065

Calculator

Solution

The third proportional to 81,686 and 130,065 is: 207,096.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,686 : 130,065 = 130,065 : x
  2. Step 2: Convert to fraction form
    81,686/130,065 = 130,065/x
  3. Step 3: Cross multiply
    81,686x = 130,065 × 130,065
  4. Step 4: Simplify right side
    81,686x = 16,916,904,225
  5. Step 5: Solve for x
    x = 16,916,904,225/81,686
  6. Step 6: Final answer
    x = 207,096.74

Related Problems

Find third proportional to 40,843 and 65,032.50
Half scale
Find third proportional to 163,372 and 260,130
Double scale
Find third proportional to 81,688 and 130,068
Similar ratio
Find third proportional to 122,529 and 195,097.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.