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Finding the Fourth Proportional to 187,108.62, 280,840.35 and 115,815.59

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Solution

The fourth proportional to 187,108.62, 280,840.35 and 115,815.59 is: 173,833.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,108.62 : 280,840.35 = 115,815.59 : x
  2. Step 2: Convert to fraction form
    187,108.62/280,840.35 = 115,815.59/x
  3. Step 3: Cross multiply
    187,108.62x = 280,840.35 × 115,815.59
  4. Step 4: Simplify right side
    187,108.62x = 32,525,689,426.85
  5. Step 5: Solve for x
    x = 32,525,689,426.85/187,108.62
  6. Step 6: Final answer
    x = 173,833.20

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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.