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Finding the Fourth Proportional to 103,265.73, 154,900.31 and 28,385.42

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Solution

The fourth proportional to 103,265.73, 154,900.31 and 28,385.42 is: 42,578.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,265.73 : 154,900.31 = 28,385.42 : x
  2. Step 2: Convert to fraction form
    103,265.73/154,900.31 = 28,385.42/x
  3. Step 3: Cross multiply
    103,265.73x = 154,900.31 × 28,385.42
  4. Step 4: Simplify right side
    103,265.73x = 4,396,909,970.23
  5. Step 5: Solve for x
    x = 4,396,909,970.23/103,265.73
  6. Step 6: Final answer
    x = 42,578.60

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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.