Home / 128,577-192,738

Finding the Third Proportional to 128,577 and 192,738

Calculator

Solution

The third proportional to 128,577 and 192,738 is: 288,915.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,577 : 192,738 = 192,738 : x
  2. Step 2: Convert to fraction form
    128,577/192,738 = 192,738/x
  3. Step 3: Cross multiply
    128,577x = 192,738 × 192,738
  4. Step 4: Simplify right side
    128,577x = 37,147,936,644
  5. Step 5: Solve for x
    x = 37,147,936,644/128,577
  6. Step 6: Final answer
    x = 288,915.88

Related Problems

Find third proportional to 64,288.50 and 96,369
Half scale
Find third proportional to 257,154 and 385,476
Double scale
Find third proportional to 128,579 and 192,741
Similar ratio
Find third proportional to 192,865.50 and 289,107
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.