Home / 128,070-205,774

Finding the Third Proportional to 128,070 and 205,774

Calculator

Solution

The third proportional to 128,070 and 205,774 is: 330,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,070 : 205,774 = 205,774 : x
  2. Step 2: Convert to fraction form
    128,070/205,774 = 205,774/x
  3. Step 3: Cross multiply
    128,070x = 205,774 × 205,774
  4. Step 4: Simplify right side
    128,070x = 42,342,939,076
  5. Step 5: Solve for x
    x = 42,342,939,076/128,070
  6. Step 6: Final answer
    x = 330,623.40

Related Problems

Find third proportional to 64,035 and 102,887
Half scale
Find third proportional to 256,140 and 411,548
Double scale
Find third proportional to 128,072 and 205,777
Similar ratio
Find third proportional to 192,105 and 308,661
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.