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Finding the Fourth Proportional to 192,012.30, 287,629.65 and 108,809.10

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Solution

The fourth proportional to 192,012.30, 287,629.65 and 108,809.10 is: 162,993.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,012.30 : 287,629.65 = 108,809.10 : x
  2. Step 2: Convert to fraction form
    192,012.30/287,629.65 = 108,809.10/x
  3. Step 3: Cross multiply
    192,012.30x = 287,629.65 × 108,809.10
  4. Step 4: Simplify right side
    192,012.30x = 31,296,723,349.82
  5. Step 5: Solve for x
    x = 31,296,723,349.82/192,012.30
  6. Step 6: Final answer
    x = 162,993.33

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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.