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Finding the Fourth Proportional to 192,557.12, 288,977.56 and 91,355.54

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Solution

The fourth proportional to 192,557.12, 288,977.56 and 91,355.54 is: 137,100.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,557.12 : 288,977.56 = 91,355.54 : x
  2. Step 2: Convert to fraction form
    192,557.12/288,977.56 = 91,355.54/x
  3. Step 3: Cross multiply
    192,557.12x = 288,977.56 × 91,355.54
  4. Step 4: Simplify right side
    192,557.12x = 26,399,701,041.68
  5. Step 5: Solve for x
    x = 26,399,701,041.68/192,557.12
  6. Step 6: Final answer
    x = 137,100.62

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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.