Home / 67,990-147,278

Finding the Third Proportional to 67,990 and 147,278

Calculator

Solution

The third proportional to 67,990 and 147,278 is: 319,029.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,990 : 147,278 = 147,278 : x
  2. Step 2: Convert to fraction form
    67,990/147,278 = 147,278/x
  3. Step 3: Cross multiply
    67,990x = 147,278 × 147,278
  4. Step 4: Simplify right side
    67,990x = 21,690,809,284
  5. Step 5: Solve for x
    x = 21,690,809,284/67,990
  6. Step 6: Final answer
    x = 319,029.41

Related Problems

Find third proportional to 33,995 and 73,639
Half scale
Find third proportional to 135,980 and 294,556
Double scale
Find third proportional to 67,992 and 147,282
Similar ratio
Find third proportional to 101,985 and 220,917
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.