Home / 76,678-156,486

Finding the Third Proportional to 76,678 and 156,486

Calculator

Solution

The third proportional to 76,678 and 156,486 is: 319,359.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,678 : 156,486 = 156,486 : x
  2. Step 2: Convert to fraction form
    76,678/156,486 = 156,486/x
  3. Step 3: Cross multiply
    76,678x = 156,486 × 156,486
  4. Step 4: Simplify right side
    76,678x = 24,487,868,196
  5. Step 5: Solve for x
    x = 24,487,868,196/76,678
  6. Step 6: Final answer
    x = 319,359.77

Related Problems

Find third proportional to 38,339 and 78,243
Half scale
Find third proportional to 153,356 and 312,972
Double scale
Find third proportional to 76,680 and 156,490
Similar ratio
Find third proportional to 115,017 and 234,729
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.