Home / 78,480-120,075

Finding the Third Proportional to 78,480 and 120,075

Calculator

Solution

The third proportional to 78,480 and 120,075 is: 183,715.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,480 : 120,075 = 120,075 : x
  2. Step 2: Convert to fraction form
    78,480/120,075 = 120,075/x
  3. Step 3: Cross multiply
    78,480x = 120,075 × 120,075
  4. Step 4: Simplify right side
    78,480x = 14,418,005,625
  5. Step 5: Solve for x
    x = 14,418,005,625/78,480
  6. Step 6: Final answer
    x = 183,715.67

Related Problems

Find third proportional to 39,240 and 60,037.50
Half scale
Find third proportional to 156,960 and 240,150
Double scale
Find third proportional to 78,482 and 120,078
Similar ratio
Find third proportional to 117,720 and 180,112.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.