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Finding the Fourth Proportional to 127,891.56, 191,866.46 and 39,152.04

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Solution

The fourth proportional to 127,891.56, 191,866.46 and 39,152.04 is: 58,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,891.56 : 191,866.46 = 39,152.04 : x
  2. Step 2: Convert to fraction form
    127,891.56/191,866.46 = 39,152.04/x
  3. Step 3: Cross multiply
    127,891.56x = 191,866.46 × 39,152.04
  4. Step 4: Simplify right side
    127,891.56x = 7,511,963,316.58
  5. Step 5: Solve for x
    x = 7,511,963,316.58/127,891.56
  6. Step 6: Final answer
    x = 58,736.97

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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.