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Finding the Fourth Proportional to 192,659.89, 288,918.14 and 66,264.65

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Solution

The fourth proportional to 192,659.89, 288,918.14 and 66,264.65 is: 99,372.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,659.89 : 288,918.14 = 66,264.65 : x
  2. Step 2: Convert to fraction form
    192,659.89/288,918.14 = 66,264.65/x
  3. Step 3: Cross multiply
    192,659.89x = 288,918.14 × 66,264.65
  4. Step 4: Simplify right side
    192,659.89x = 19,145,059,425.75
  5. Step 5: Solve for x
    x = 19,145,059,425.75/192,659.89
  6. Step 6: Final answer
    x = 99,372.32

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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.