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Finding the Fourth Proportional to 133,065.70, 199,622.85 and 54,187.90

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Solution

The fourth proportional to 133,065.70, 199,622.85 and 54,187.90 is: 81,291.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,065.70 : 199,622.85 = 54,187.90 : x
  2. Step 2: Convert to fraction form
    133,065.70/199,622.85 = 54,187.90/x
  3. Step 3: Cross multiply
    133,065.70x = 199,622.85 × 54,187.90
  4. Step 4: Simplify right side
    133,065.70x = 10,817,143,033.52
  5. Step 5: Solve for x
    x = 10,817,143,033.52/133,065.70
  6. Step 6: Final answer
    x = 81,291.75

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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.