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Finding the Fourth Proportional to 187,340.39, 280,788.54 and 87,293.45

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Solution

The fourth proportional to 187,340.39, 280,788.54 and 87,293.45 is: 130,836.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,340.39 : 280,788.54 = 87,293.45 : x
  2. Step 2: Convert to fraction form
    187,340.39/280,788.54 = 87,293.45/x
  3. Step 3: Cross multiply
    187,340.39x = 280,788.54 × 87,293.45
  4. Step 4: Simplify right side
    187,340.39x = 24,511,000,377.06
  5. Step 5: Solve for x
    x = 24,511,000,377.06/187,340.39
  6. Step 6: Final answer
    x = 130,836.71

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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.