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Finding the Fourth Proportional to 139,190.52, 208,759.54 and 39,349.92

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Solution

The fourth proportional to 139,190.52, 208,759.54 and 39,349.92 is: 59,017.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,190.52 : 208,759.54 = 39,349.92 : x
  2. Step 2: Convert to fraction form
    139,190.52/208,759.54 = 39,349.92/x
  3. Step 3: Cross multiply
    139,190.52x = 208,759.54 × 39,349.92
  4. Step 4: Simplify right side
    139,190.52x = 8,214,671,198.24
  5. Step 5: Solve for x
    x = 8,214,671,198.24/139,190.52
  6. Step 6: Final answer
    x = 59,017.46

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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.