Home / 68,940-105,415

Finding the Third Proportional to 68,940 and 105,415

Calculator

Solution

The third proportional to 68,940 and 105,415 is: 161,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,940 : 105,415 = 105,415 : x
  2. Step 2: Convert to fraction form
    68,940/105,415 = 105,415/x
  3. Step 3: Cross multiply
    68,940x = 105,415 × 105,415
  4. Step 4: Simplify right side
    68,940x = 11,112,322,225
  5. Step 5: Solve for x
    x = 11,112,322,225/68,940
  6. Step 6: Final answer
    x = 161,188.31

Related Problems

Find third proportional to 34,470 and 52,707.50
Half scale
Find third proportional to 137,880 and 210,830
Double scale
Find third proportional to 68,942 and 105,418
Similar ratio
Find third proportional to 103,410 and 158,122.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.