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Finding the Fourth Proportional to 99,530.70, 149,296.05 and 73,286.70

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Solution

The fourth proportional to 99,530.70, 149,296.05 and 73,286.70 is: 109,930.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,530.70 : 149,296.05 = 73,286.70 : x
  2. Step 2: Convert to fraction form
    99,530.70/149,296.05 = 73,286.70/x
  3. Step 3: Cross multiply
    99,530.70x = 149,296.05 × 73,286.70
  4. Step 4: Simplify right side
    99,530.70x = 10,941,414,827.54
  5. Step 5: Solve for x
    x = 10,941,414,827.54/99,530.70
  6. Step 6: Final answer
    x = 109,930.05

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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.