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Finding the Fourth Proportional to 139,056.58, 208,584.86 and 39,203.73

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Solution

The fourth proportional to 139,056.58, 208,584.86 and 39,203.73 is: 58,805.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,056.58 : 208,584.86 = 39,203.73 : x
  2. Step 2: Convert to fraction form
    139,056.58/208,584.86 = 39,203.73/x
  3. Step 3: Cross multiply
    139,056.58x = 208,584.86 × 39,203.73
  4. Step 4: Simplify right side
    139,056.58x = 8,177,304,337.51
  5. Step 5: Solve for x
    x = 8,177,304,337.51/139,056.58
  6. Step 6: Final answer
    x = 58,805.59

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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.