Home / 120,215-187,127

Finding the Third Proportional to 120,215 and 187,127

Calculator

Solution

The third proportional to 120,215 and 187,127 is: 291,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,215 : 187,127 = 187,127 : x
  2. Step 2: Convert to fraction form
    120,215/187,127 = 187,127/x
  3. Step 3: Cross multiply
    120,215x = 187,127 × 187,127
  4. Step 4: Simplify right side
    120,215x = 35,016,514,129
  5. Step 5: Solve for x
    x = 35,016,514,129/120,215
  6. Step 6: Final answer
    x = 291,282.40

Related Problems

Find third proportional to 60,107.50 and 93,563.50
Half scale
Find third proportional to 240,430 and 374,254
Double scale
Find third proportional to 120,217 and 187,130
Similar ratio
Find third proportional to 180,322.50 and 280,690.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.