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Finding the Fourth Proportional to 151,866.10, 227,799.15 and 81,007.30

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Solution

The fourth proportional to 151,866.10, 227,799.15 and 81,007.30 is: 121,510.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,866.10 : 227,799.15 = 81,007.30 : x
  2. Step 2: Convert to fraction form
    151,866.10/227,799.15 = 81,007.30/x
  3. Step 3: Cross multiply
    151,866.10x = 227,799.15 × 81,007.30
  4. Step 4: Simplify right side
    151,866.10x = 18,453,394,083.80
  5. Step 5: Solve for x
    x = 18,453,394,083.80/151,866.10
  6. Step 6: Final answer
    x = 121,510.95

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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.