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Finding the Fourth Proportional to 187,717.71, 259,051.35 and 102,834.78

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Solution

The fourth proportional to 187,717.71, 259,051.35 and 102,834.78 is: 141,912.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,717.71 : 259,051.35 = 102,834.78 : x
  2. Step 2: Convert to fraction form
    187,717.71/259,051.35 = 102,834.78/x
  3. Step 3: Cross multiply
    187,717.71x = 259,051.35 × 102,834.78
  4. Step 4: Simplify right side
    187,717.71x = 26,639,488,585.95
  5. Step 5: Solve for x
    x = 26,639,488,585.95/187,717.71
  6. Step 6: Final answer
    x = 141,912.50

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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.