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Finding the Fourth Proportional to 187,424.73, 281,105.78 and 82,215.45

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Solution

The fourth proportional to 187,424.73, 281,105.78 and 82,215.45 is: 123,309.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,424.73 : 281,105.78 = 82,215.45 : x
  2. Step 2: Convert to fraction form
    187,424.73/281,105.78 = 82,215.45/x
  3. Step 3: Cross multiply
    187,424.73x = 281,105.78 × 82,215.45
  4. Step 4: Simplify right side
    187,424.73x = 23,111,237,789.22
  5. Step 5: Solve for x
    x = 23,111,237,789.22/187,424.73
  6. Step 6: Final answer
    x = 123,309.44

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1.5x scale

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.