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Finding the Fourth Proportional to 187,696.79, 259,021.68 and 102,815.27

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Solution

The fourth proportional to 187,696.79, 259,021.68 and 102,815.27 is: 141,885.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,696.79 : 259,021.68 = 102,815.27 : x
  2. Step 2: Convert to fraction form
    187,696.79/259,021.68 = 102,815.27/x
  3. Step 3: Cross multiply
    187,696.79x = 259,021.68 × 102,815.27
  4. Step 4: Simplify right side
    187,696.79x = 26,631,383,965.05
  5. Step 5: Solve for x
    x = 26,631,383,965.05/187,696.79
  6. Step 6: Final answer
    x = 141,885.13

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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.