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Finding the Fourth Proportional to 139,166.52, 208,761.06 and 39,327.54

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Solution

The fourth proportional to 139,166.52, 208,761.06 and 39,327.54 is: 58,994.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,166.52 : 208,761.06 = 39,327.54 : x
  2. Step 2: Convert to fraction form
    139,166.52/208,761.06 = 39,327.54/x
  3. Step 3: Cross multiply
    139,166.52x = 208,761.06 × 39,327.54
  4. Step 4: Simplify right side
    139,166.52x = 8,210,058,937.59
  5. Step 5: Solve for x
    x = 8,210,058,937.59/139,166.52
  6. Step 6: Final answer
    x = 58,994.50

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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.