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Finding the Fourth Proportional to 188,963.72, 260,769.90 and 104,080.79

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Solution

The fourth proportional to 188,963.72, 260,769.90 and 104,080.79 is: 143,631.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,963.72 : 260,769.90 = 104,080.79 : x
  2. Step 2: Convert to fraction form
    188,963.72/260,769.90 = 104,080.79/x
  3. Step 3: Cross multiply
    188,963.72x = 260,769.90 × 104,080.79
  4. Step 4: Simplify right side
    188,963.72x = 27,141,136,190.16
  5. Step 5: Solve for x
    x = 27,141,136,190.16/188,963.72
  6. Step 6: Final answer
    x = 143,631.46

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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.