Home / 78,678-118,671

Finding the Third Proportional to 78,678 and 118,671

Calculator

Solution

The third proportional to 78,678 and 118,671 is: 178,992.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,678 : 118,671 = 118,671 : x
  2. Step 2: Convert to fraction form
    78,678/118,671 = 118,671/x
  3. Step 3: Cross multiply
    78,678x = 118,671 × 118,671
  4. Step 4: Simplify right side
    78,678x = 14,082,806,241
  5. Step 5: Solve for x
    x = 14,082,806,241/78,678
  6. Step 6: Final answer
    x = 178,992.94

Related Problems

Find third proportional to 39,339 and 59,335.50
Half scale
Find third proportional to 157,356 and 237,342
Double scale
Find third proportional to 78,680 and 118,674
Similar ratio
Find third proportional to 118,017 and 178,006.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.