Home / 77,128.50-114,720

Finding the Third Proportional to 77,128.50 and 114,720

Calculator

Solution

The third proportional to 77,128.50 and 114,720 is: 170,633.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,128.50 : 114,720 = 114,720 : x
  2. Step 2: Convert to fraction form
    77,128.50/114,720 = 114,720/x
  3. Step 3: Cross multiply
    77,128.50x = 114,720 × 114,720
  4. Step 4: Simplify right side
    77,128.50x = 13,160,678,400
  5. Step 5: Solve for x
    x = 13,160,678,400/77,128.50
  6. Step 6: Final answer
    x = 170,633.14

Related Problems

Find third proportional to 38,564.25 and 57,360
Half scale
Find third proportional to 154,257 and 229,440
Double scale
Find third proportional to 77,131 and 114,723
Similar ratio
Find third proportional to 115,692.75 and 172,080
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.