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Finding the Fourth Proportional to 192,800.70, 289,006.65 and 87,695.10

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Solution

The fourth proportional to 192,800.70, 289,006.65 and 87,695.10 is: 131,454.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,800.70 : 289,006.65 = 87,695.10 : x
  2. Step 2: Convert to fraction form
    192,800.70/289,006.65 = 87,695.10/x
  3. Step 3: Cross multiply
    192,800.70x = 289,006.65 × 87,695.10
  4. Step 4: Simplify right side
    192,800.70x = 25,344,467,072.42
  5. Step 5: Solve for x
    x = 25,344,467,072.42/192,800.70
  6. Step 6: Final answer
    x = 131,454.23

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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.