Home / 71,280-99,653

Finding the Third Proportional to 71,280 and 99,653

Calculator

Solution

The third proportional to 71,280 and 99,653 is: 139,319.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,280 : 99,653 = 99,653 : x
  2. Step 2: Convert to fraction form
    71,280/99,653 = 99,653/x
  3. Step 3: Cross multiply
    71,280x = 99,653 × 99,653
  4. Step 4: Simplify right side
    71,280x = 9,930,720,409
  5. Step 5: Solve for x
    x = 9,930,720,409/71,280
  6. Step 6: Final answer
    x = 139,319.87

Related Problems

Find third proportional to 35,640 and 49,826.50
Half scale
Find third proportional to 142,560 and 199,306
Double scale
Find third proportional to 71,282 and 99,656
Similar ratio
Find third proportional to 106,920 and 149,479.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.