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Finding the Fourth Proportional to 192,505.53, 288,807.50 and 74,145.09

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Solution

The fourth proportional to 192,505.53, 288,807.50 and 74,145.09 is: 111,236.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,505.53 : 288,807.50 = 74,145.09 : x
  2. Step 2: Convert to fraction form
    192,505.53/288,807.50 = 74,145.09/x
  3. Step 3: Cross multiply
    192,505.53x = 288,807.50 × 74,145.09
  4. Step 4: Simplify right side
    192,505.53x = 21,413,658,080.18
  5. Step 5: Solve for x
    x = 21,413,658,080.18/192,505.53
  6. Step 6: Final answer
    x = 111,236.59

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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.