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Finding the Fourth Proportional to 187,691.79, 259,014.78 and 102,810.27

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Solution

The fourth proportional to 187,691.79, 259,014.78 and 102,810.27 is: 141,878.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,691.79 : 259,014.78 = 102,810.27 : x
  2. Step 2: Convert to fraction form
    187,691.79/259,014.78 = 102,810.27/x
  3. Step 3: Cross multiply
    187,691.79x = 259,014.78 × 102,810.27
  4. Step 4: Simplify right side
    187,691.79x = 26,629,379,465.79
  5. Step 5: Solve for x
    x = 26,629,379,465.79/187,691.79
  6. Step 6: Final answer
    x = 141,878.23

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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.