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Finding the Fourth Proportional to 133,240.87, 183,872.03 and 72,811.90

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Solution

The fourth proportional to 133,240.87, 183,872.03 and 72,811.90 is: 100,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,240.87 : 183,872.03 = 72,811.90 : x
  2. Step 2: Convert to fraction form
    133,240.87/183,872.03 = 72,811.90/x
  3. Step 3: Cross multiply
    133,240.87x = 183,872.03 × 72,811.90
  4. Step 4: Simplify right side
    133,240.87x = 13,388,070,692.66
  5. Step 5: Solve for x
    x = 13,388,070,692.66/133,240.87
  6. Step 6: Final answer
    x = 100,480.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.