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Finding the Fourth Proportional to 188,253.75, 259,791.99 and 103,372.65

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Solution

The fourth proportional to 188,253.75, 259,791.99 and 103,372.65 is: 142,655.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,253.75 : 259,791.99 = 103,372.65 : x
  2. Step 2: Convert to fraction form
    188,253.75/259,791.99 = 103,372.65/x
  3. Step 3: Cross multiply
    188,253.75x = 259,791.99 × 103,372.65
  4. Step 4: Simplify right side
    188,253.75x = 26,855,386,455.07
  5. Step 5: Solve for x
    x = 26,855,386,455.07/188,253.75
  6. Step 6: Final answer
    x = 142,655.25

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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.