Home / 78,402-117,779

Finding the Third Proportional to 78,402 and 117,779

Calculator

Solution

The third proportional to 78,402 and 117,779 is: 176,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,402 : 117,779 = 117,779 : x
  2. Step 2: Convert to fraction form
    78,402/117,779 = 117,779/x
  3. Step 3: Cross multiply
    78,402x = 117,779 × 117,779
  4. Step 4: Simplify right side
    78,402x = 13,871,892,841
  5. Step 5: Solve for x
    x = 13,871,892,841/78,402
  6. Step 6: Final answer
    x = 176,932.90

Related Problems

Find third proportional to 39,201 and 58,889.50
Half scale
Find third proportional to 156,804 and 235,558
Double scale
Find third proportional to 78,404 and 117,782
Similar ratio
Find third proportional to 117,603 and 176,668.50
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.