Home / 68,890-140,691

Finding the Third Proportional to 68,890 and 140,691

Calculator

Solution

The third proportional to 68,890 and 140,691 is: 287,327.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,890 : 140,691 = 140,691 : x
  2. Step 2: Convert to fraction form
    68,890/140,691 = 140,691/x
  3. Step 3: Cross multiply
    68,890x = 140,691 × 140,691
  4. Step 4: Simplify right side
    68,890x = 19,793,957,481
  5. Step 5: Solve for x
    x = 19,793,957,481/68,890
  6. Step 6: Final answer
    x = 287,327.01

Related Problems

Find third proportional to 34,445 and 70,345.50
Half scale
Find third proportional to 137,780 and 281,382
Double scale
Find third proportional to 68,892 and 140,695
Similar ratio
Find third proportional to 103,335 and 211,036.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.