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Finding the Fourth Proportional to 192,469.70, 288,510.15 and 87,364.10

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Solution

The fourth proportional to 192,469.70, 288,510.15 and 87,364.10 is: 130,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,469.70 : 288,510.15 = 87,364.10 : x
  2. Step 2: Convert to fraction form
    192,469.70/288,510.15 = 87,364.10/x
  3. Step 3: Cross multiply
    192,469.70x = 288,510.15 × 87,364.10
  4. Step 4: Simplify right side
    192,469.70x = 25,205,429,595.62
  5. Step 5: Solve for x
    x = 25,205,429,595.62/192,469.70
  6. Step 6: Final answer
    x = 130,957.91

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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.