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Finding the Fourth Proportional to 103,679.66, 155,507.13 and 36,199.95

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Solution

The fourth proportional to 103,679.66, 155,507.13 and 36,199.95 is: 54,295.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,679.66 : 155,507.13 = 36,199.95 : x
  2. Step 2: Convert to fraction form
    103,679.66/155,507.13 = 36,199.95/x
  3. Step 3: Cross multiply
    103,679.66x = 155,507.13 × 36,199.95
  4. Step 4: Simplify right side
    103,679.66x = 5,629,350,330.64
  5. Step 5: Solve for x
    x = 5,629,350,330.64/103,679.66
  6. Step 6: Final answer
    x = 54,295.61

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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.