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Finding the Fourth Proportional to 143,099.73, 197,484.48 and 82,678.39

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Solution

The fourth proportional to 143,099.73, 197,484.48 and 82,678.39 is: 114,100.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,099.73 : 197,484.48 = 82,678.39 : x
  2. Step 2: Convert to fraction form
    143,099.73/197,484.48 = 82,678.39/x
  3. Step 3: Cross multiply
    143,099.73x = 197,484.48 × 82,678.39
  4. Step 4: Simplify right side
    143,099.73x = 16,327,698,362.68
  5. Step 5: Solve for x
    x = 16,327,698,362.68/143,099.73
  6. Step 6: Final answer
    x = 114,100.13

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1.5x scale

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.