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Finding the Fourth Proportional to 188,545.48, 260,186.11 and 103,661.89

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Solution

The fourth proportional to 188,545.48, 260,186.11 and 103,661.89 is: 143,049.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,545.48 : 260,186.11 = 103,661.89 : x
  2. Step 2: Convert to fraction form
    188,545.48/260,186.11 = 103,661.89/x
  3. Step 3: Cross multiply
    188,545.48x = 260,186.11 × 103,661.89
  4. Step 4: Simplify right side
    188,545.48x = 26,971,383,914.35
  5. Step 5: Solve for x
    x = 26,971,383,914.35/188,545.48
  6. Step 6: Final answer
    x = 143,049.75

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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.