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Finding the Fourth Proportional to 102,993.20, 154,374.60 and 43,818.80

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Solution

The fourth proportional to 102,993.20, 154,374.60 and 43,818.80 is: 65,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,993.20 : 154,374.60 = 43,818.80 : x
  2. Step 2: Convert to fraction form
    102,993.20/154,374.60 = 43,818.80/x
  3. Step 3: Cross multiply
    102,993.20x = 154,374.60 × 43,818.80
  4. Step 4: Simplify right side
    102,993.20x = 6,764,509,722.48
  5. Step 5: Solve for x
    x = 6,764,509,722.48/102,993.20
  6. Step 6: Final answer
    x = 65,679.19

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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.