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Finding the Fourth Proportional to 111,323.69, 167,208.89 and 66,432.62

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Solution

The fourth proportional to 111,323.69, 167,208.89 and 66,432.62 is: 99,782.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,323.69 : 167,208.89 = 66,432.62 : x
  2. Step 2: Convert to fraction form
    111,323.69/167,208.89 = 66,432.62/x
  3. Step 3: Cross multiply
    111,323.69x = 167,208.89 × 66,432.62
  4. Step 4: Simplify right side
    111,323.69x = 11,108,125,234.10
  5. Step 5: Solve for x
    x = 11,108,125,234.10/111,323.69
  6. Step 6: Final answer
    x = 99,782.22

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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.