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Finding the Fourth Proportional to 133,315.70, 199,900.65 and 54,340.70

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Solution

The fourth proportional to 133,315.70, 199,900.65 and 54,340.70 is: 81,481.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,315.70 : 199,900.65 = 54,340.70 : x
  2. Step 2: Convert to fraction form
    133,315.70/199,900.65 = 54,340.70/x
  3. Step 3: Cross multiply
    133,315.70x = 199,900.65 × 54,340.70
  4. Step 4: Simplify right side
    133,315.70x = 10,862,741,251.46
  5. Step 5: Solve for x
    x = 10,862,741,251.46/133,315.70
  6. Step 6: Final answer
    x = 81,481.34

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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.