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Finding the Fourth Proportional to 138,379.73, 207,557.44 and 38,533.46

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Solution

The fourth proportional to 138,379.73, 207,557.44 and 38,533.46 is: 57,796.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,379.73 : 207,557.44 = 38,533.46 : x
  2. Step 2: Convert to fraction form
    138,379.73/207,557.44 = 38,533.46/x
  3. Step 3: Cross multiply
    138,379.73x = 207,557.44 × 38,533.46
  4. Step 4: Simplify right side
    138,379.73x = 7,997,905,177.82
  5. Step 5: Solve for x
    x = 7,997,905,177.82/138,379.73
  6. Step 6: Final answer
    x = 57,796.80

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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.