Home / 78,642-125,087

Finding the Third Proportional to 78,642 and 125,087

Calculator

Solution

The third proportional to 78,642 and 125,087 is: 198,961.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,642 : 125,087 = 125,087 : x
  2. Step 2: Convert to fraction form
    78,642/125,087 = 125,087/x
  3. Step 3: Cross multiply
    78,642x = 125,087 × 125,087
  4. Step 4: Simplify right side
    78,642x = 15,646,757,569
  5. Step 5: Solve for x
    x = 15,646,757,569/78,642
  6. Step 6: Final answer
    x = 198,961.85

Related Problems

Find third proportional to 39,321 and 62,543.50
Half scale
Find third proportional to 157,284 and 250,174
Double scale
Find third proportional to 78,644 and 125,090
Similar ratio
Find third proportional to 117,963 and 187,630.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.