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Finding the Fourth Proportional to 136,545.44, 188,355.53 and 85,469.51

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Solution

The fourth proportional to 136,545.44, 188,355.53 and 85,469.51 is: 117,899.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,545.44 : 188,355.53 = 85,469.51 : x
  2. Step 2: Convert to fraction form
    136,545.44/188,355.53 = 85,469.51/x
  3. Step 3: Cross multiply
    136,545.44x = 188,355.53 × 85,469.51
  4. Step 4: Simplify right side
    136,545.44x = 16,098,654,427.54
  5. Step 5: Solve for x
    x = 16,098,654,427.54/136,545.44
  6. Step 6: Final answer
    x = 117,899.61

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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.