Home / 128,563.20-192,974.40-62,056.80

Finding the Fourth Proportional to 128,563.20, 192,974.40 and 62,056.80

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Solution

The fourth proportional to 128,563.20, 192,974.40 and 62,056.80 is: 93,147.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,563.20 : 192,974.40 = 62,056.80 : x
  2. Step 2: Convert to fraction form
    128,563.20/192,974.40 = 62,056.80/x
  3. Step 3: Cross multiply
    128,563.20x = 192,974.40 × 62,056.80
  4. Step 4: Simplify right side
    128,563.20x = 11,975,373,745.92
  5. Step 5: Solve for x
    x = 11,975,373,745.92/128,563.20
  6. Step 6: Final answer
    x = 93,147.76

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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.