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Finding the Fourth Proportional to 103,907.58, 155,805.47 and 53,863.62

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Solution

The fourth proportional to 103,907.58, 155,805.47 and 53,863.62 is: 80,766.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,907.58 : 155,805.47 = 53,863.62 : x
  2. Step 2: Convert to fraction form
    103,907.58/155,805.47 = 53,863.62/x
  3. Step 3: Cross multiply
    103,907.58x = 155,805.47 × 53,863.62
  4. Step 4: Simplify right side
    103,907.58x = 8,392,245,850.97
  5. Step 5: Solve for x
    x = 8,392,245,850.97/103,907.58
  6. Step 6: Final answer
    x = 80,766.45

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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.