Home / 78,842-121,197

Finding the Third Proportional to 78,842 and 121,197

Calculator

Solution

The third proportional to 78,842 and 121,197 is: 186,305.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,842 : 121,197 = 121,197 : x
  2. Step 2: Convert to fraction form
    78,842/121,197 = 121,197/x
  3. Step 3: Cross multiply
    78,842x = 121,197 × 121,197
  4. Step 4: Simplify right side
    78,842x = 14,688,712,809
  5. Step 5: Solve for x
    x = 14,688,712,809/78,842
  6. Step 6: Final answer
    x = 186,305.68

Related Problems

Find third proportional to 39,421 and 60,598.50
Half scale
Find third proportional to 157,684 and 242,394
Double scale
Find third proportional to 78,844 and 121,200
Similar ratio
Find third proportional to 118,263 and 181,795.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.