Home / 78,759-171,342

Finding the Third Proportional to 78,759 and 171,342

Calculator

Solution

The third proportional to 78,759 and 171,342 is: 372,758.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,759 : 171,342 = 171,342 : x
  2. Step 2: Convert to fraction form
    78,759/171,342 = 171,342/x
  3. Step 3: Cross multiply
    78,759x = 171,342 × 171,342
  4. Step 4: Simplify right side
    78,759x = 29,358,080,964
  5. Step 5: Solve for x
    x = 29,358,080,964/78,759
  6. Step 6: Final answer
    x = 372,758.43

Related Problems

Find third proportional to 39,379.50 and 85,671
Half scale
Find third proportional to 157,518 and 342,684
Double scale
Find third proportional to 78,761 and 171,346
Similar ratio
Find third proportional to 118,138.50 and 257,013
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.