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Finding the Fourth Proportional to 187,894.91, 259,311.27 and 103,028.37

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Solution

The fourth proportional to 187,894.91, 259,311.27 and 103,028.37 is: 142,188.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,894.91 : 259,311.27 = 103,028.37 : x
  2. Step 2: Convert to fraction form
    187,894.91/259,311.27 = 103,028.37/x
  3. Step 3: Cross multiply
    187,894.91x = 259,311.27 × 103,028.37
  4. Step 4: Simplify right side
    187,894.91x = 26,716,417,470.73
  5. Step 5: Solve for x
    x = 26,716,417,470.73/187,894.91
  6. Step 6: Final answer
    x = 142,188.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.