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Finding the Fourth Proportional to 116,768.54, 161,148.78 and 66,467.54

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Solution

The fourth proportional to 116,768.54, 161,148.78 and 66,467.54 is: 91,729.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,768.54 : 161,148.78 = 66,467.54 : x
  2. Step 2: Convert to fraction form
    116,768.54/161,148.78 = 66,467.54/x
  3. Step 3: Cross multiply
    116,768.54x = 161,148.78 × 66,467.54
  4. Step 4: Simplify right side
    116,768.54x = 10,711,162,980.60
  5. Step 5: Solve for x
    x = 10,711,162,980.60/116,768.54
  6. Step 6: Final answer
    x = 91,729.87

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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.