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Finding the Fourth Proportional to 192,445.66, 288,679.02 and 87,272.56

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Solution

The fourth proportional to 192,445.66, 288,679.02 and 87,272.56 is: 130,913.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,445.66 : 288,679.02 = 87,272.56 : x
  2. Step 2: Convert to fraction form
    192,445.66/288,679.02 = 87,272.56/x
  3. Step 3: Cross multiply
    192,445.66x = 288,679.02 × 87,272.56
  4. Step 4: Simplify right side
    192,445.66x = 25,193,757,093.69
  5. Step 5: Solve for x
    x = 25,193,757,093.69/192,445.66
  6. Step 6: Final answer
    x = 130,913.62

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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.