Home / 68,451.75-137,920.50

Finding the Third Proportional to 68,451.75 and 137,920.50

Calculator

Solution

The third proportional to 68,451.75 and 137,920.50 is: 277,890.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,451.75 : 137,920.50 = 137,920.50 : x
  2. Step 2: Convert to fraction form
    68,451.75/137,920.50 = 137,920.50/x
  3. Step 3: Cross multiply
    68,451.75x = 137,920.50 × 137,920.50
  4. Step 4: Simplify right side
    68,451.75x = 19,022,064,320.25
  5. Step 5: Solve for x
    x = 19,022,064,320.25/68,451.75
  6. Step 6: Final answer
    x = 277,890.11

Related Problems

Find third proportional to 34,225.88 and 68,960.25
Half scale
Find third proportional to 136,903.50 and 275,841
Double scale
Find third proportional to 68,454 and 137,925
Similar ratio
Find third proportional to 102,677.63 and 206,880.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.01) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.