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Finding the Fourth Proportional to 187,393.52, 258,513.72 and 115,747.76

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Solution

The fourth proportional to 187,393.52, 258,513.72 and 115,747.76 is: 159,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,393.52 : 258,513.72 = 115,747.76 : x
  2. Step 2: Convert to fraction form
    187,393.52/258,513.72 = 115,747.76/x
  3. Step 3: Cross multiply
    187,393.52x = 258,513.72 × 115,747.76
  4. Step 4: Simplify right side
    187,393.52x = 29,922,384,019.27
  5. Step 5: Solve for x
    x = 29,922,384,019.27/187,393.52
  6. Step 6: Final answer
    x = 159,676.73

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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.