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Finding the Fourth Proportional to 104,343.54, 143,973.09 and 66,118.02

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Solution

The fourth proportional to 104,343.54, 143,973.09 and 66,118.02 is: 91,229.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,343.54 : 143,973.09 = 66,118.02 : x
  2. Step 2: Convert to fraction form
    104,343.54/143,973.09 = 66,118.02/x
  3. Step 3: Cross multiply
    104,343.54x = 143,973.09 × 66,118.02
  4. Step 4: Simplify right side
    104,343.54x = 9,519,215,644.08
  5. Step 5: Solve for x
    x = 9,519,215,644.08/104,343.54
  6. Step 6: Final answer
    x = 91,229.56

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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.