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Finding the Fourth Proportional to 103,696.20, 143,103.46 and 58,375.84

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Solution

The fourth proportional to 103,696.20, 143,103.46 and 58,375.84 is: 80,560.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,696.20 : 143,103.46 = 58,375.84 : x
  2. Step 2: Convert to fraction form
    103,696.20/143,103.46 = 58,375.84/x
  3. Step 3: Cross multiply
    103,696.20x = 143,103.46 × 58,375.84
  4. Step 4: Simplify right side
    103,696.20x = 8,353,784,684.41
  5. Step 5: Solve for x
    x = 8,353,784,684.41/103,696.20
  6. Step 6: Final answer
    x = 80,560.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.