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Finding the Fourth Proportional to 139,327.60, 208,848.42 and 55,053.64

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Solution

The fourth proportional to 139,327.60, 208,848.42 and 55,053.64 is: 82,523.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,327.60 : 208,848.42 = 55,053.64 : x
  2. Step 2: Convert to fraction form
    139,327.60/208,848.42 = 55,053.64/x
  3. Step 3: Cross multiply
    139,327.60x = 208,848.42 × 55,053.64
  4. Step 4: Simplify right side
    139,327.60x = 11,497,865,729.25
  5. Step 5: Solve for x
    x = 11,497,865,729.25/139,327.60
  6. Step 6: Final answer
    x = 82,523.96

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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.