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Finding the Fourth Proportional to 128,028.80, 192,100.80 and 44,982.40

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Solution

The fourth proportional to 128,028.80, 192,100.80 and 44,982.40 is: 67,493.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,028.80 : 192,100.80 = 44,982.40 : x
  2. Step 2: Convert to fraction form
    128,028.80/192,100.80 = 44,982.40/x
  3. Step 3: Cross multiply
    128,028.80x = 192,100.80 × 44,982.40
  4. Step 4: Simplify right side
    128,028.80x = 8,641,155,025.92
  5. Step 5: Solve for x
    x = 8,641,155,025.92/128,028.80
  6. Step 6: Final answer
    x = 67,493.84

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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.