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Finding the Fourth Proportional to 192,758.75, 289,157.49 and 66,382.35

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Solution

The fourth proportional to 192,758.75, 289,157.49 and 66,382.35 is: 99,580.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,758.75 : 289,157.49 = 66,382.35 : x
  2. Step 2: Convert to fraction form
    192,758.75/289,157.49 = 66,382.35/x
  3. Step 3: Cross multiply
    192,758.75x = 289,157.49 × 66,382.35
  4. Step 4: Simplify right side
    192,758.75x = 19,194,952,621.96
  5. Step 5: Solve for x
    x = 19,194,952,621.96/192,758.75
  6. Step 6: Final answer
    x = 99,580.19

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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.