Home / 39,778-87,210

Finding the Third Proportional to 39,778 and 87,210

Calculator

Solution

The third proportional to 39,778 and 87,210 is: 191,200.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,778 : 87,210 = 87,210 : x
  2. Step 2: Convert to fraction form
    39,778/87,210 = 87,210/x
  3. Step 3: Cross multiply
    39,778x = 87,210 × 87,210
  4. Step 4: Simplify right side
    39,778x = 7,605,584,100
  5. Step 5: Solve for x
    x = 7,605,584,100/39,778
  6. Step 6: Final answer
    x = 191,200.77

Related Problems

Find third proportional to 19,889 and 43,605
Half scale
Find third proportional to 79,556 and 174,420
Double scale
Find third proportional to 39,780 and 87,214
Similar ratio
Find third proportional to 59,667 and 130,815
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.