Home / 78,088-121,020

Finding the Third Proportional to 78,088 and 121,020

Calculator

Solution

The third proportional to 78,088 and 121,020 is: 187,555.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,088 : 121,020 = 121,020 : x
  2. Step 2: Convert to fraction form
    78,088/121,020 = 121,020/x
  3. Step 3: Cross multiply
    78,088x = 121,020 × 121,020
  4. Step 4: Simplify right side
    78,088x = 14,645,840,400
  5. Step 5: Solve for x
    x = 14,645,840,400/78,088
  6. Step 6: Final answer
    x = 187,555.58

Related Problems

Find third proportional to 39,044 and 60,510
Half scale
Find third proportional to 156,176 and 242,040
Double scale
Find third proportional to 78,090 and 121,023
Similar ratio
Find third proportional to 117,132 and 181,530
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.