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Finding the Fourth Proportional to 103,641.87, 155,453.84 and 63,104.91

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Solution

The fourth proportional to 103,641.87, 155,453.84 and 63,104.91 is: 94,651.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,641.87 : 155,453.84 = 63,104.91 : x
  2. Step 2: Convert to fraction form
    103,641.87/155,453.84 = 63,104.91/x
  3. Step 3: Cross multiply
    103,641.87x = 155,453.84 × 63,104.91
  4. Step 4: Simplify right side
    103,641.87x = 9,809,900,582.35
  5. Step 5: Solve for x
    x = 9,809,900,582.35/103,641.87
  6. Step 6: Final answer
    x = 94,651.91

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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.