Home / 88,140-128,517

Finding the Third Proportional to 88,140 and 128,517

Calculator

Solution

The third proportional to 88,140 and 128,517 is: 187,390.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,140 : 128,517 = 128,517 : x
  2. Step 2: Convert to fraction form
    88,140/128,517 = 128,517/x
  3. Step 3: Cross multiply
    88,140x = 128,517 × 128,517
  4. Step 4: Simplify right side
    88,140x = 16,516,619,289
  5. Step 5: Solve for x
    x = 16,516,619,289/88,140
  6. Step 6: Final answer
    x = 187,390.73

Related Problems

Find third proportional to 44,070 and 64,258.50
Half scale
Find third proportional to 176,280 and 257,034
Double scale
Find third proportional to 88,142 and 128,520
Similar ratio
Find third proportional to 132,210 and 192,775.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.