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Finding the Fourth Proportional to 103,217.97, 154,827.18 and 28,339.14

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Solution

The fourth proportional to 103,217.97, 154,827.18 and 28,339.14 is: 42,508.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,217.97 : 154,827.18 = 28,339.14 : x
  2. Step 2: Convert to fraction form
    103,217.97/154,827.18 = 28,339.14/x
  3. Step 3: Cross multiply
    103,217.97x = 154,827.18 × 28,339.14
  4. Step 4: Simplify right side
    103,217.97x = 4,387,669,129.83
  5. Step 5: Solve for x
    x = 4,387,669,129.83/103,217.97
  6. Step 6: Final answer
    x = 42,508.77

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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.