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Finding the Fourth Proportional to 187,186.54, 280,890.96 and 68,940.82

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Solution

The fourth proportional to 187,186.54, 280,890.96 and 68,940.82 is: 103,452.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,186.54 : 280,890.96 = 68,940.82 : x
  2. Step 2: Convert to fraction form
    187,186.54/280,890.96 = 68,940.82/x
  3. Step 3: Cross multiply
    187,186.54x = 280,890.96 × 68,940.82
  4. Step 4: Simplify right side
    187,186.54x = 19,364,853,112.99
  5. Step 5: Solve for x
    x = 19,364,853,112.99/187,186.54
  6. Step 6: Final answer
    x = 103,452.17

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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.