Home / 106,380.80-159,571.20-71,129.60

Finding the Fourth Proportional to 106,380.80, 159,571.20 and 71,129.60

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Solution

The fourth proportional to 106,380.80, 159,571.20 and 71,129.60 is: 106,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,380.80 : 159,571.20 = 71,129.60 : x
  2. Step 2: Convert to fraction form
    106,380.80/159,571.20 = 71,129.60/x
  3. Step 3: Cross multiply
    106,380.80x = 159,571.20 × 71,129.60
  4. Step 4: Simplify right side
    106,380.80x = 11,350,235,627.52
  5. Step 5: Solve for x
    x = 11,350,235,627.52/106,380.80
  6. Step 6: Final answer
    x = 106,694.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.