Home / 77,631-120,240

Finding the Third Proportional to 77,631 and 120,240

Calculator

Solution

The third proportional to 77,631 and 120,240 is: 186,235.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,631 : 120,240 = 120,240 : x
  2. Step 2: Convert to fraction form
    77,631/120,240 = 120,240/x
  3. Step 3: Cross multiply
    77,631x = 120,240 × 120,240
  4. Step 4: Simplify right side
    77,631x = 14,457,657,600
  5. Step 5: Solve for x
    x = 14,457,657,600/77,631
  6. Step 6: Final answer
    x = 186,235.62

Related Problems

Find third proportional to 38,815.50 and 60,120
Half scale
Find third proportional to 155,262 and 240,480
Double scale
Find third proportional to 77,633 and 120,243
Similar ratio
Find third proportional to 116,446.50 and 180,360
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.