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Finding the Fourth Proportional to 187,857.61, 259,250.15 and 102,974.65

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Solution

The fourth proportional to 187,857.61, 259,250.15 and 102,974.65 is: 142,108.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,857.61 : 259,250.15 = 102,974.65 : x
  2. Step 2: Convert to fraction form
    187,857.61/259,250.15 = 102,974.65/x
  3. Step 3: Cross multiply
    187,857.61x = 259,250.15 × 102,974.65
  4. Step 4: Simplify right side
    187,857.61x = 26,696,193,458.70
  5. Step 5: Solve for x
    x = 26,696,193,458.70/187,857.61
  6. Step 6: Final answer
    x = 142,108.66

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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.