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Finding the Fourth Proportional to 119,761.76, 179,659.87 and 39,772.55

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Solution

The fourth proportional to 119,761.76, 179,659.87 and 39,772.55 is: 59,664.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,761.76 : 179,659.87 = 39,772.55 : x
  2. Step 2: Convert to fraction form
    119,761.76/179,659.87 = 39,772.55/x
  3. Step 3: Cross multiply
    119,761.76x = 179,659.87 × 39,772.55
  4. Step 4: Simplify right side
    119,761.76x = 7,145,531,512.29
  5. Step 5: Solve for x
    x = 7,145,531,512.29/119,761.76
  6. Step 6: Final answer
    x = 59,664.55

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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.