Home / 81,047-122,687

Finding the Third Proportional to 81,047 and 122,687

Calculator

Solution

The third proportional to 81,047 and 122,687 is: 185,720.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,047 : 122,687 = 122,687 : x
  2. Step 2: Convert to fraction form
    81,047/122,687 = 122,687/x
  3. Step 3: Cross multiply
    81,047x = 122,687 × 122,687
  4. Step 4: Simplify right side
    81,047x = 15,052,099,969
  5. Step 5: Solve for x
    x = 15,052,099,969/81,047
  6. Step 6: Final answer
    x = 185,720.63

Related Problems

Find third proportional to 40,523.50 and 61,343.50
Half scale
Find third proportional to 162,094 and 245,374
Double scale
Find third proportional to 81,049 and 122,690
Similar ratio
Find third proportional to 121,570.50 and 184,030.50
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.