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Finding the Fourth Proportional to 143,072, 197,439.36 and 92,771.36

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Solution

The fourth proportional to 143,072, 197,439.36 and 92,771.36 is: 128,024.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,072 : 197,439.36 = 92,771.36 : x
  2. Step 2: Convert to fraction form
    143,072/197,439.36 = 92,771.36/x
  3. Step 3: Cross multiply
    143,072x = 197,439.36 × 92,771.36
  4. Step 4: Simplify right side
    143,072x = 18,316,717,944.73
  5. Step 5: Solve for x
    x = 18,316,717,944.73/143,072
  6. Step 6: Final answer
    x = 128,024.48

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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.