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Finding the Fourth Proportional to 192,752.76, 289,073.64 and 66,387.90

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Solution

The fourth proportional to 192,752.76, 289,073.64 and 66,387.90 is: 99,562.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,752.76 : 289,073.64 = 66,387.90 : x
  2. Step 2: Convert to fraction form
    192,752.76/289,073.64 = 66,387.90/x
  3. Step 3: Cross multiply
    192,752.76x = 289,073.64 × 66,387.90
  4. Step 4: Simplify right side
    192,752.76x = 19,190,991,904.96
  5. Step 5: Solve for x
    x = 19,190,991,904.96/192,752.76
  6. Step 6: Final answer
    x = 99,562.73

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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.