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Finding the Fourth Proportional to 99,286.20, 148,564.80 and 73,042.20

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Solution

The fourth proportional to 99,286.20, 148,564.80 and 73,042.20 is: 109,295.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,286.20 : 148,564.80 = 73,042.20 : x
  2. Step 2: Convert to fraction form
    99,286.20/148,564.80 = 73,042.20/x
  3. Step 3: Cross multiply
    99,286.20x = 148,564.80 × 73,042.20
  4. Step 4: Simplify right side
    99,286.20x = 10,851,499,834.56
  5. Step 5: Solve for x
    x = 10,851,499,834.56/99,286.20
  6. Step 6: Final answer
    x = 109,295.15

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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.