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Finding the Fourth Proportional to 192,487.38, 288,659.16 and 66,091.74

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Solution

The fourth proportional to 192,487.38, 288,659.16 and 66,091.74 is: 99,112.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,487.38 : 288,659.16 = 66,091.74 : x
  2. Step 2: Convert to fraction form
    192,487.38/288,659.16 = 66,091.74/x
  3. Step 3: Cross multiply
    192,487.38x = 288,659.16 × 66,091.74
  4. Step 4: Simplify right side
    192,487.38x = 19,077,986,151.34
  5. Step 5: Solve for x
    x = 19,077,986,151.34/192,487.38
  6. Step 6: Final answer
    x = 99,112.92

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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.