Home / 109,111.50-150,576-66,092.61

Finding the Fourth Proportional to 109,111.50, 150,576 and 66,092.61

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Solution

The fourth proportional to 109,111.50, 150,576 and 66,092.61 is: 91,209.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,111.50 : 150,576 = 66,092.61 : x
  2. Step 2: Convert to fraction form
    109,111.50/150,576 = 66,092.61/x
  3. Step 3: Cross multiply
    109,111.50x = 150,576 × 66,092.61
  4. Step 4: Simplify right side
    109,111.50x = 9,951,960,843.36
  5. Step 5: Solve for x
    x = 9,951,960,843.36/109,111.50
  6. Step 6: Final answer
    x = 91,209.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.