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Finding the Fourth Proportional to 132,900.80, 199,351.20 and 115,404.80

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Solution

The fourth proportional to 132,900.80, 199,351.20 and 115,404.80 is: 173,107.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,900.80 : 199,351.20 = 115,404.80 : x
  2. Step 2: Convert to fraction form
    132,900.80/199,351.20 = 115,404.80/x
  3. Step 3: Cross multiply
    132,900.80x = 199,351.20 × 115,404.80
  4. Step 4: Simplify right side
    132,900.80x = 23,006,085,365.76
  5. Step 5: Solve for x
    x = 23,006,085,365.76/132,900.80
  6. Step 6: Final answer
    x = 173,107.20

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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.