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Finding the Fourth Proportional to 188,512.81, 260,141.07 and 103,629.27

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Solution

The fourth proportional to 188,512.81, 260,141.07 and 103,629.27 is: 143,004.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,512.81 : 260,141.07 = 103,629.27 : x
  2. Step 2: Convert to fraction form
    188,512.81/260,141.07 = 103,629.27/x
  3. Step 3: Cross multiply
    188,512.81x = 260,141.07 × 103,629.27
  4. Step 4: Simplify right side
    188,512.81x = 26,958,229,181.12
  5. Step 5: Solve for x
    x = 26,958,229,181.12/188,512.81
  6. Step 6: Final answer
    x = 143,004.76

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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.