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Finding the Fourth Proportional to 99,159.48, 136,841.94 and 54,447.48

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Solution

The fourth proportional to 99,159.48, 136,841.94 and 54,447.48 is: 75,138.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,159.48 : 136,841.94 = 54,447.48 : x
  2. Step 2: Convert to fraction form
    99,159.48/136,841.94 = 54,447.48/x
  3. Step 3: Cross multiply
    99,159.48x = 136,841.94 × 54,447.48
  4. Step 4: Simplify right side
    99,159.48x = 7,450,698,791.31
  5. Step 5: Solve for x
    x = 7,450,698,791.31/99,159.48
  6. Step 6: Final answer
    x = 75,138.54

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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.