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Finding the Fourth Proportional to 102,743.40, 154,143.90 and 50,154.60

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Solution

The fourth proportional to 102,743.40, 154,143.90 and 50,154.60 is: 75,245.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,743.40 : 154,143.90 = 50,154.60 : x
  2. Step 2: Convert to fraction form
    102,743.40/154,143.90 = 50,154.60/x
  3. Step 3: Cross multiply
    102,743.40x = 154,143.90 × 50,154.60
  4. Step 4: Simplify right side
    102,743.40x = 7,731,025,646.94
  5. Step 5: Solve for x
    x = 7,731,025,646.94/102,743.40
  6. Step 6: Final answer
    x = 75,245.96

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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.