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Finding the Fourth Proportional to 128,374.20, 192,564 and 44,133.48

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Solution

The fourth proportional to 128,374.20, 192,564 and 44,133.48 is: 66,201.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,374.20 : 192,564 = 44,133.48 : x
  2. Step 2: Convert to fraction form
    128,374.20/192,564 = 44,133.48/x
  3. Step 3: Cross multiply
    128,374.20x = 192,564 × 44,133.48
  4. Step 4: Simplify right side
    128,374.20x = 8,498,519,442.72
  5. Step 5: Solve for x
    x = 8,498,519,442.72/128,374.20
  6. Step 6: Final answer
    x = 66,201.15

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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.