Home / 128,112.75-275,179.50

Finding the Third Proportional to 128,112.75 and 275,179.50

Calculator

Solution

The third proportional to 128,112.75 and 275,179.50 is: 591,071.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,112.75 : 275,179.50 = 275,179.50 : x
  2. Step 2: Convert to fraction form
    128,112.75/275,179.50 = 275,179.50/x
  3. Step 3: Cross multiply
    128,112.75x = 275,179.50 × 275,179.50
  4. Step 4: Simplify right side
    128,112.75x = 75,723,757,220.25
  5. Step 5: Solve for x
    x = 75,723,757,220.25/128,112.75
  6. Step 6: Final answer
    x = 591,071.20

Related Problems

Find third proportional to 64,056.38 and 137,589.75
Half scale
Find third proportional to 256,225.50 and 550,359
Double scale
Find third proportional to 128,115 and 275,184
Similar ratio
Find third proportional to 192,169.13 and 412,769.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.