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Finding the Fourth Proportional to 103,617.02, 155,425.52 and 68,548.48

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Solution

The fourth proportional to 103,617.02, 155,425.52 and 68,548.48 is: 102,822.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,617.02 : 155,425.52 = 68,548.48 : x
  2. Step 2: Convert to fraction form
    103,617.02/155,425.52 = 68,548.48/x
  3. Step 3: Cross multiply
    103,617.02x = 155,425.52 × 68,548.48
  4. Step 4: Simplify right side
    103,617.02x = 10,654,183,149.21
  5. Step 5: Solve for x
    x = 10,654,183,149.21/103,617.02
  6. Step 6: Final answer
    x = 102,822.71

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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.