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Finding the Fourth Proportional to 133,813.95, 200,721.27 and 45,129.75

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Solution

The fourth proportional to 133,813.95, 200,721.27 and 45,129.75 is: 67,694.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,813.95 : 200,721.27 = 45,129.75 : x
  2. Step 2: Convert to fraction form
    133,813.95/200,721.27 = 45,129.75/x
  3. Step 3: Cross multiply
    133,813.95x = 200,721.27 × 45,129.75
  4. Step 4: Simplify right side
    133,813.95x = 9,058,500,734.78
  5. Step 5: Solve for x
    x = 9,058,500,734.78/133,813.95
  6. Step 6: Final answer
    x = 67,694.74

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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.