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Finding the Fourth Proportional to 187,185.54, 280,889.46 and 68,939.82

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Solution

The fourth proportional to 187,185.54, 280,889.46 and 68,939.82 is: 103,450.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,185.54 : 280,889.46 = 68,939.82 : x
  2. Step 2: Convert to fraction form
    187,185.54/280,889.46 = 68,939.82/x
  3. Step 3: Cross multiply
    187,185.54x = 280,889.46 × 68,939.82
  4. Step 4: Simplify right side
    187,185.54x = 19,364,468,812.30
  5. Step 5: Solve for x
    x = 19,364,468,812.30/187,185.54
  6. Step 6: Final answer
    x = 103,450.67

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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.