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Finding the Fourth Proportional to 191,033.64, 286,636.62 and 78,791.33

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Solution

The fourth proportional to 191,033.64, 286,636.62 and 78,791.33 is: 118,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,033.64 : 286,636.62 = 78,791.33 : x
  2. Step 2: Convert to fraction form
    191,033.64/286,636.62 = 78,791.33/x
  3. Step 3: Cross multiply
    191,033.64x = 286,636.62 × 78,791.33
  4. Step 4: Simplify right side
    191,033.64x = 22,584,481,528.56
  5. Step 5: Solve for x
    x = 22,584,481,528.56/191,033.64
  6. Step 6: Final answer
    x = 118,222.54

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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.