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Finding the Fourth Proportional to 131,578.56, 197,393.76 and 48,473.28

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Solution

The fourth proportional to 131,578.56, 197,393.76 and 48,473.28 is: 72,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,578.56 : 197,393.76 = 48,473.28 : x
  2. Step 2: Convert to fraction form
    131,578.56/197,393.76 = 48,473.28/x
  3. Step 3: Cross multiply
    131,578.56x = 197,393.76 × 48,473.28
  4. Step 4: Simplify right side
    131,578.56x = 9,568,322,998.73
  5. Step 5: Solve for x
    x = 9,568,322,998.73/131,578.56
  6. Step 6: Final answer
    x = 72,719.47

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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.