Home / 58,911-128,190

Finding the Third Proportional to 58,911 and 128,190

Calculator

Solution

The third proportional to 58,911 and 128,190 is: 278,940.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,911 : 128,190 = 128,190 : x
  2. Step 2: Convert to fraction form
    58,911/128,190 = 128,190/x
  3. Step 3: Cross multiply
    58,911x = 128,190 × 128,190
  4. Step 4: Simplify right side
    58,911x = 16,432,676,100
  5. Step 5: Solve for x
    x = 16,432,676,100/58,911
  6. Step 6: Final answer
    x = 278,940.71

Related Problems

Find third proportional to 29,455.50 and 64,095
Half scale
Find third proportional to 117,822 and 256,380
Double scale
Find third proportional to 58,913 and 128,194
Similar ratio
Find third proportional to 88,366.50 and 192,285
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.