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Finding the Fourth Proportional to 187,358.83, 258,545.68 and 115,745.11

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Solution

The fourth proportional to 187,358.83, 258,545.68 and 115,745.11 is: 159,722.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,358.83 : 258,545.68 = 115,745.11 : x
  2. Step 2: Convert to fraction form
    187,358.83/258,545.68 = 115,745.11/x
  3. Step 3: Cross multiply
    187,358.83x = 258,545.68 × 115,745.11
  4. Step 4: Simplify right side
    187,358.83x = 29,925,397,235.90
  5. Step 5: Solve for x
    x = 29,925,397,235.90/187,358.83
  6. Step 6: Final answer
    x = 159,722.38

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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.