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Finding the Fourth Proportional to 103,391.97, 155,102.55 and 36,817.86

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Solution

The fourth proportional to 103,391.97, 155,102.55 and 36,817.86 is: 55,231.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,391.97 : 155,102.55 = 36,817.86 : x
  2. Step 2: Convert to fraction form
    103,391.97/155,102.55 = 36,817.86/x
  3. Step 3: Cross multiply
    103,391.97x = 155,102.55 × 36,817.86
  4. Step 4: Simplify right side
    103,391.97x = 5,710,543,971.54
  5. Step 5: Solve for x
    x = 5,710,543,971.54/103,391.97
  6. Step 6: Final answer
    x = 55,231.99

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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.