Home / 121,887-188,358

Finding the Third Proportional to 121,887 and 188,358

Calculator

Solution

The third proportional to 121,887 and 188,358 is: 291,078.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,887 : 188,358 = 188,358 : x
  2. Step 2: Convert to fraction form
    121,887/188,358 = 188,358/x
  3. Step 3: Cross multiply
    121,887x = 188,358 × 188,358
  4. Step 4: Simplify right side
    121,887x = 35,478,736,164
  5. Step 5: Solve for x
    x = 35,478,736,164/121,887
  6. Step 6: Final answer
    x = 291,078.92

Related Problems

Find third proportional to 60,943.50 and 94,179
Half scale
Find third proportional to 243,774 and 376,716
Double scale
Find third proportional to 121,889 and 188,361
Similar ratio
Find third proportional to 182,830.50 and 282,537
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.