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Finding the Fourth Proportional to 192,305.04, 288,405.72 and 87,018

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Solution

The fourth proportional to 192,305.04, 288,405.72 and 87,018 is: 130,503.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,305.04 : 288,405.72 = 87,018 : x
  2. Step 2: Convert to fraction form
    192,305.04/288,405.72 = 87,018/x
  3. Step 3: Cross multiply
    192,305.04x = 288,405.72 × 87,018
  4. Step 4: Simplify right side
    192,305.04x = 25,096,488,942.96
  5. Step 5: Solve for x
    x = 25,096,488,942.96/192,305.04
  6. Step 6: Final answer
    x = 130,503.54

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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.