Home / 77,781-117,385.50

Finding the Third Proportional to 77,781 and 117,385.50

Calculator

Solution

The third proportional to 77,781 and 117,385.50 is: 177,155.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,781 : 117,385.50 = 117,385.50 : x
  2. Step 2: Convert to fraction form
    77,781/117,385.50 = 117,385.50/x
  3. Step 3: Cross multiply
    77,781x = 117,385.50 × 117,385.50
  4. Step 4: Simplify right side
    77,781x = 13,779,355,610.25
  5. Step 5: Solve for x
    x = 13,779,355,610.25/77,781
  6. Step 6: Final answer
    x = 177,155.80

Related Problems

Find third proportional to 38,890.50 and 58,692.75
Half scale
Find third proportional to 155,562 and 234,771
Double scale
Find third proportional to 77,783 and 117,389
Similar ratio
Find third proportional to 116,671.50 and 176,078.25
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.