Home / 131,136-281,385

Finding the Third Proportional to 131,136 and 281,385

Calculator

Solution

The third proportional to 131,136 and 281,385 is: 603,781.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,136 : 281,385 = 281,385 : x
  2. Step 2: Convert to fraction form
    131,136/281,385 = 281,385/x
  3. Step 3: Cross multiply
    131,136x = 281,385 × 281,385
  4. Step 4: Simplify right side
    131,136x = 79,177,518,225
  5. Step 5: Solve for x
    x = 79,177,518,225/131,136
  6. Step 6: Final answer
    x = 603,781.71

Related Problems

Find third proportional to 65,568 and 140,692.50
Half scale
Find third proportional to 262,272 and 562,770
Double scale
Find third proportional to 131,138 and 281,389
Similar ratio
Find third proportional to 196,704 and 422,077.50
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.