Home / 139,990.50-211,133.25

Finding the Third Proportional to 139,990.50 and 211,133.25

Calculator

Solution

The third proportional to 139,990.50 and 211,133.25 is: 318,430.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,990.50 : 211,133.25 = 211,133.25 : x
  2. Step 2: Convert to fraction form
    139,990.50/211,133.25 = 211,133.25/x
  3. Step 3: Cross multiply
    139,990.50x = 211,133.25 × 211,133.25
  4. Step 4: Simplify right side
    139,990.50x = 44,577,249,255.56
  5. Step 5: Solve for x
    x = 44,577,249,255.56/139,990.50
  6. Step 6: Final answer
    x = 318,430.53

Related Problems

Find third proportional to 69,995.25 and 105,566.63
Half scale
Find third proportional to 279,981 and 422,266.50
Double scale
Find third proportional to 139,993 and 211,136
Similar ratio
Find third proportional to 209,985.75 and 316,699.88
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.