Home / 128,552.20-192,747.30-53,724.40

Finding the Fourth Proportional to 128,552.20, 192,747.30 and 53,724.40

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Solution

The fourth proportional to 128,552.20, 192,747.30 and 53,724.40 is: 80,552.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,552.20 : 192,747.30 = 53,724.40 : x
  2. Step 2: Convert to fraction form
    128,552.20/192,747.30 = 53,724.40/x
  3. Step 3: Cross multiply
    128,552.20x = 192,747.30 × 53,724.40
  4. Step 4: Simplify right side
    128,552.20x = 10,355,233,044.12
  5. Step 5: Solve for x
    x = 10,355,233,044.12/128,552.20
  6. Step 6: Final answer
    x = 80,552.75

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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.