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Finding the Fourth Proportional to 128,704.77, 193,058.30 and 52,845.03

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Solution

The fourth proportional to 128,704.77, 193,058.30 and 52,845.03 is: 79,268.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,704.77 : 193,058.30 = 52,845.03 : x
  2. Step 2: Convert to fraction form
    128,704.77/193,058.30 = 52,845.03/x
  3. Step 3: Cross multiply
    128,704.77x = 193,058.30 × 52,845.03
  4. Step 4: Simplify right side
    128,704.77x = 10,202,171,787.36
  5. Step 5: Solve for x
    x = 10,202,171,787.36/128,704.77
  6. Step 6: Final answer
    x = 79,268.02

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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.