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Finding the Fourth Proportional to 133,484.72, 200,185.79 and 38,721.87

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Solution

The fourth proportional to 133,484.72, 200,185.79 and 38,721.87 is: 58,070.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,484.72 : 200,185.79 = 38,721.87 : x
  2. Step 2: Convert to fraction form
    133,484.72/200,185.79 = 38,721.87/x
  3. Step 3: Cross multiply
    133,484.72x = 200,185.79 × 38,721.87
  4. Step 4: Simplify right side
    133,484.72x = 7,751,567,942.62
  5. Step 5: Solve for x
    x = 7,751,567,942.62/133,484.72
  6. Step 6: Final answer
    x = 58,070.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.