Home / 77,780-120,662

Finding the Third Proportional to 77,780 and 120,662

Calculator

Solution

The third proportional to 77,780 and 120,662 is: 187,185.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,780 : 120,662 = 120,662 : x
  2. Step 2: Convert to fraction form
    77,780/120,662 = 120,662/x
  3. Step 3: Cross multiply
    77,780x = 120,662 × 120,662
  4. Step 4: Simplify right side
    77,780x = 14,559,318,244
  5. Step 5: Solve for x
    x = 14,559,318,244/77,780
  6. Step 6: Final answer
    x = 187,185.89

Related Problems

Find third proportional to 38,890 and 60,331
Half scale
Find third proportional to 155,560 and 241,324
Double scale
Find third proportional to 77,782 and 120,665
Similar ratio
Find third proportional to 116,670 and 180,993
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.