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Finding the Fourth Proportional to 144,081.70, 216,105.54 and 38,908.87

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Solution

The fourth proportional to 144,081.70, 216,105.54 and 38,908.87 is: 58,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,081.70 : 216,105.54 = 38,908.87 : x
  2. Step 2: Convert to fraction form
    144,081.70/216,105.54 = 38,908.87/x
  3. Step 3: Cross multiply
    144,081.70x = 216,105.54 × 38,908.87
  4. Step 4: Simplify right side
    144,081.70x = 8,408,422,362.14
  5. Step 5: Solve for x
    x = 8,408,422,362.14/144,081.70
  6. Step 6: Final answer
    x = 58,358.71

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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.