Home / 51,180-78,957

Finding the Third Proportional to 51,180 and 78,957

Calculator

Solution

The third proportional to 51,180 and 78,957 is: 121,809.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,180 : 78,957 = 78,957 : x
  2. Step 2: Convert to fraction form
    51,180/78,957 = 78,957/x
  3. Step 3: Cross multiply
    51,180x = 78,957 × 78,957
  4. Step 4: Simplify right side
    51,180x = 6,234,207,849
  5. Step 5: Solve for x
    x = 6,234,207,849/51,180
  6. Step 6: Final answer
    x = 121,809.45

Related Problems

Find third proportional to 25,590 and 39,478.50
Half scale
Find third proportional to 102,360 and 157,914
Double scale
Find third proportional to 51,182 and 78,960
Similar ratio
Find third proportional to 76,770 and 118,435.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.