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Finding the Fourth Proportional to 192,455, 288,608.52 and 66,071.72

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Solution

The fourth proportional to 192,455, 288,608.52 and 66,071.72 is: 99,082.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,455 : 288,608.52 = 66,071.72 : x
  2. Step 2: Convert to fraction form
    192,455/288,608.52 = 66,071.72/x
  3. Step 3: Cross multiply
    192,455x = 288,608.52 × 66,071.72
  4. Step 4: Simplify right side
    192,455x = 19,068,861,323.05
  5. Step 5: Solve for x
    x = 19,068,861,323.05/192,455
  6. Step 6: Final answer
    x = 99,082.18

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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.