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Finding the Fourth Proportional to 133,872.65, 200,535.59 and 74,739.81

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Solution

The fourth proportional to 133,872.65, 200,535.59 and 74,739.81 is: 111,957.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,872.65 : 200,535.59 = 74,739.81 : x
  2. Step 2: Convert to fraction form
    133,872.65/200,535.59 = 74,739.81/x
  3. Step 3: Cross multiply
    133,872.65x = 200,535.59 × 74,739.81
  4. Step 4: Simplify right side
    133,872.65x = 14,987,991,521.14
  5. Step 5: Solve for x
    x = 14,987,991,521.14/133,872.65
  6. Step 6: Final answer
    x = 111,957.09

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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.