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Finding the Fourth Proportional to 133,319.20, 199,905.90 and 54,344.20

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Solution

The fourth proportional to 133,319.20, 199,905.90 and 54,344.20 is: 81,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,319.20 : 199,905.90 = 54,344.20 : x
  2. Step 2: Convert to fraction form
    133,319.20/199,905.90 = 54,344.20/x
  3. Step 3: Cross multiply
    133,319.20x = 199,905.90 × 54,344.20
  4. Step 4: Simplify right side
    133,319.20x = 10,863,726,210.78
  5. Step 5: Solve for x
    x = 10,863,726,210.78/133,319.20
  6. Step 6: Final answer
    x = 81,486.58

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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.