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Finding the Fourth Proportional to 116,664, 161,004.96 and 66,379.20

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Solution

The fourth proportional to 116,664, 161,004.96 and 66,379.20 is: 91,608.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,664 : 161,004.96 = 66,379.20 : x
  2. Step 2: Convert to fraction form
    116,664/161,004.96 = 66,379.20/x
  3. Step 3: Cross multiply
    116,664x = 161,004.96 × 66,379.20
  4. Step 4: Simplify right side
    116,664x = 10,687,380,440.83
  5. Step 5: Solve for x
    x = 10,687,380,440.83/116,664
  6. Step 6: Final answer
    x = 91,608.21

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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.