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Finding the Fourth Proportional to 133,257.60, 199,627.20 and 73,987.20

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Solution

The fourth proportional to 133,257.60, 199,627.20 and 73,987.20 is: 110,836.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,257.60 : 199,627.20 = 73,987.20 : x
  2. Step 2: Convert to fraction form
    133,257.60/199,627.20 = 73,987.20/x
  3. Step 3: Cross multiply
    133,257.60x = 199,627.20 × 73,987.20
  4. Step 4: Simplify right side
    133,257.60x = 14,769,857,571.84
  5. Step 5: Solve for x
    x = 14,769,857,571.84/133,257.60
  6. Step 6: Final answer
    x = 110,836.89

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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.