Home / 129,430-201,057

Finding the Third Proportional to 129,430 and 201,057

Calculator

Solution

The third proportional to 129,430 and 201,057 is: 312,322.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,430 : 201,057 = 201,057 : x
  2. Step 2: Convert to fraction form
    129,430/201,057 = 201,057/x
  3. Step 3: Cross multiply
    129,430x = 201,057 × 201,057
  4. Step 4: Simplify right side
    129,430x = 40,423,917,249
  5. Step 5: Solve for x
    x = 40,423,917,249/129,430
  6. Step 6: Final answer
    x = 312,322.62

Related Problems

Find third proportional to 64,715 and 100,528.50
Half scale
Find third proportional to 258,860 and 402,114
Double scale
Find third proportional to 129,432 and 201,060
Similar ratio
Find third proportional to 194,145 and 301,585.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.