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Finding the Fourth Proportional to 185,791.51, 278,615.94 and 79,107.83

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Solution

The fourth proportional to 185,791.51, 278,615.94 and 79,107.83 is: 118,631.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,791.51 : 278,615.94 = 79,107.83 : x
  2. Step 2: Convert to fraction form
    185,791.51/278,615.94 = 79,107.83/x
  3. Step 3: Cross multiply
    185,791.51x = 278,615.94 × 79,107.83
  4. Step 4: Simplify right side
    185,791.51x = 22,040,702,416.81
  5. Step 5: Solve for x
    x = 22,040,702,416.81/185,791.51
  6. Step 6: Final answer
    x = 118,631.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.