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Finding the Fourth Proportional to 128,475.88, 192,464.40 and 94,680.52

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Solution

The fourth proportional to 128,475.88, 192,464.40 and 94,680.52 is: 141,836.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,475.88 : 192,464.40 = 94,680.52 : x
  2. Step 2: Convert to fraction form
    128,475.88/192,464.40 = 94,680.52/x
  3. Step 3: Cross multiply
    128,475.88x = 192,464.40 × 94,680.52
  4. Step 4: Simplify right side
    128,475.88x = 18,222,629,473.49
  5. Step 5: Solve for x
    x = 18,222,629,473.49/128,475.88
  6. Step 6: Final answer
    x = 141,836.97

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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.