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Finding the Fourth Proportional to 131,843.30, 197,836.02 and 87,490.94

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Solution

The fourth proportional to 131,843.30, 197,836.02 and 87,490.94 is: 131,283.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,843.30 : 197,836.02 = 87,490.94 : x
  2. Step 2: Convert to fraction form
    131,843.30/197,836.02 = 87,490.94/x
  3. Step 3: Cross multiply
    131,843.30x = 197,836.02 × 87,490.94
  4. Step 4: Simplify right side
    131,843.30x = 17,308,858,366.48
  5. Step 5: Solve for x
    x = 17,308,858,366.48/131,843.30
  6. Step 6: Final answer
    x = 131,283.57

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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.