Home / 69,138-148,785

Finding the Third Proportional to 69,138 and 148,785

Calculator

Solution

The third proportional to 69,138 and 148,785 is: 320,185.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,138 : 148,785 = 148,785 : x
  2. Step 2: Convert to fraction form
    69,138/148,785 = 148,785/x
  3. Step 3: Cross multiply
    69,138x = 148,785 × 148,785
  4. Step 4: Simplify right side
    69,138x = 22,136,976,225
  5. Step 5: Solve for x
    x = 22,136,976,225/69,138
  6. Step 6: Final answer
    x = 320,185.37

Related Problems

Find third proportional to 34,569 and 74,392.50
Half scale
Find third proportional to 138,276 and 297,570
Double scale
Find third proportional to 69,140 and 148,789
Similar ratio
Find third proportional to 103,707 and 223,177.50
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.