Home / 69,439-149,540

Finding the Third Proportional to 69,439 and 149,540

Calculator

Solution

The third proportional to 69,439 and 149,540 is: 322,041.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,439 : 149,540 = 149,540 : x
  2. Step 2: Convert to fraction form
    69,439/149,540 = 149,540/x
  3. Step 3: Cross multiply
    69,439x = 149,540 × 149,540
  4. Step 4: Simplify right side
    69,439x = 22,362,211,600
  5. Step 5: Solve for x
    x = 22,362,211,600/69,439
  6. Step 6: Final answer
    x = 322,041.10

Related Problems

Find third proportional to 34,719.50 and 74,770
Half scale
Find third proportional to 138,878 and 299,080
Double scale
Find third proportional to 69,441 and 149,544
Similar ratio
Find third proportional to 104,158.50 and 224,310
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.