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Finding the Fourth Proportional to 99,796.66, 149,736.09 and 73,278.07

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Solution

The fourth proportional to 99,796.66, 149,736.09 and 73,278.07 is: 109,947.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,796.66 : 149,736.09 = 73,278.07 : x
  2. Step 2: Convert to fraction form
    99,796.66/149,736.09 = 73,278.07/x
  3. Step 3: Cross multiply
    99,796.66x = 149,736.09 × 73,278.07
  4. Step 4: Simplify right side
    99,796.66x = 10,972,371,684.55
  5. Step 5: Solve for x
    x = 10,972,371,684.55/99,796.66
  6. Step 6: Final answer
    x = 109,947.28

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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.