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Finding the Fourth Proportional to 192,731.70, 289,046.52 and 87,527.28

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Solution

The fourth proportional to 192,731.70, 289,046.52 and 87,527.28 is: 131,267.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,731.70 : 289,046.52 = 87,527.28 : x
  2. Step 2: Convert to fraction form
    192,731.70/289,046.52 = 87,527.28/x
  3. Step 3: Cross multiply
    192,731.70x = 289,046.52 × 87,527.28
  4. Step 4: Simplify right side
    192,731.70x = 25,299,455,689.07
  5. Step 5: Solve for x
    x = 25,299,455,689.07/192,731.70
  6. Step 6: Final answer
    x = 131,267.75

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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.