Home / 81,885-122,940

Finding the Third Proportional to 81,885 and 122,940

Calculator

Solution

The third proportional to 81,885 and 122,940 is: 184,578.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,885 : 122,940 = 122,940 : x
  2. Step 2: Convert to fraction form
    81,885/122,940 = 122,940/x
  3. Step 3: Cross multiply
    81,885x = 122,940 × 122,940
  4. Step 4: Simplify right side
    81,885x = 15,114,243,600
  5. Step 5: Solve for x
    x = 15,114,243,600/81,885
  6. Step 6: Final answer
    x = 184,578.90

Related Problems

Find third proportional to 40,942.50 and 61,470
Half scale
Find third proportional to 163,770 and 245,880
Double scale
Find third proportional to 81,887 and 122,943
Similar ratio
Find third proportional to 122,827.50 and 184,410
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.