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Finding the Fourth Proportional to 128,481.91, 192,671.82 and 49,545.79

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Solution

The fourth proportional to 128,481.91, 192,671.82 and 49,545.79 is: 74,299.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,481.91 : 192,671.82 = 49,545.79 : x
  2. Step 2: Convert to fraction form
    128,481.91/192,671.82 = 49,545.79/x
  3. Step 3: Cross multiply
    128,481.91x = 192,671.82 × 49,545.79
  4. Step 4: Simplify right side
    128,481.91x = 9,546,077,532.64
  5. Step 5: Solve for x
    x = 9,546,077,532.64/128,481.91
  6. Step 6: Final answer
    x = 74,299.00

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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.