Home / 128,324.80-192,487.20-34,830.55

Finding the Fourth Proportional to 128,324.80, 192,487.20 and 34,830.55

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Solution

The fourth proportional to 128,324.80, 192,487.20 and 34,830.55 is: 52,245.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,324.80 : 192,487.20 = 34,830.55 : x
  2. Step 2: Convert to fraction form
    128,324.80/192,487.20 = 34,830.55/x
  3. Step 3: Cross multiply
    128,324.80x = 192,487.20 × 34,830.55
  4. Step 4: Simplify right side
    128,324.80x = 6,704,435,043.96
  5. Step 5: Solve for x
    x = 6,704,435,043.96/128,324.80
  6. Step 6: Final answer
    x = 52,245.83

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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.