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Finding the Fourth Proportional to 133,236.70, 183,858.80 and 72,795.31

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Solution

The fourth proportional to 133,236.70, 183,858.80 and 72,795.31 is: 100,453.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,236.70 : 183,858.80 = 72,795.31 : x
  2. Step 2: Convert to fraction form
    133,236.70/183,858.80 = 72,795.31/x
  3. Step 3: Cross multiply
    133,236.70x = 183,858.80 × 72,795.31
  4. Step 4: Simplify right side
    133,236.70x = 13,384,058,064.57
  5. Step 5: Solve for x
    x = 13,384,058,064.57/133,236.70
  6. Step 6: Final answer
    x = 100,453.24

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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.