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Finding the Fourth Proportional to 123,052.66, 169,812.78 and 66,464.03

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Solution

The fourth proportional to 123,052.66, 169,812.78 and 66,464.03 is: 91,720.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,052.66 : 169,812.78 = 66,464.03 : x
  2. Step 2: Convert to fraction form
    123,052.66/169,812.78 = 66,464.03/x
  3. Step 3: Cross multiply
    123,052.66x = 169,812.78 × 66,464.03
  4. Step 4: Simplify right side
    123,052.66x = 11,286,441,704.30
  5. Step 5: Solve for x
    x = 11,286,441,704.30/123,052.66
  6. Step 6: Final answer
    x = 91,720.42

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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.