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Finding the Fourth Proportional to 138,773.77, 208,173.72 and 38,933.58

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Solution

The fourth proportional to 138,773.77, 208,173.72 and 38,933.58 is: 58,404.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,773.77 : 208,173.72 = 38,933.58 : x
  2. Step 2: Convert to fraction form
    138,773.77/208,173.72 = 38,933.58/x
  3. Step 3: Cross multiply
    138,773.77x = 208,173.72 × 38,933.58
  4. Step 4: Simplify right side
    138,773.77x = 8,104,947,140.65
  5. Step 5: Solve for x
    x = 8,104,947,140.65/138,773.77
  6. Step 6: Final answer
    x = 58,404.03

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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.