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Finding the Fourth Proportional to 188,995.78, 260,812.20 and 104,111.02

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Solution

The fourth proportional to 188,995.78, 260,812.20 and 104,111.02 is: 143,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,995.78 : 260,812.20 = 104,111.02 : x
  2. Step 2: Convert to fraction form
    188,995.78/260,812.20 = 104,111.02/x
  3. Step 3: Cross multiply
    188,995.78x = 260,812.20 × 104,111.02
  4. Step 4: Simplify right side
    188,995.78x = 27,153,424,170.44
  5. Step 5: Solve for x
    x = 27,153,424,170.44/188,995.78
  6. Step 6: Final answer
    x = 143,672.12

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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.