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Finding the Fourth Proportional to 133,859.36, 200,521.25 and 80,521.92

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Solution

The fourth proportional to 133,859.36, 200,521.25 and 80,521.92 is: 120,621.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,859.36 : 200,521.25 = 80,521.92 : x
  2. Step 2: Convert to fraction form
    133,859.36/200,521.25 = 80,521.92/x
  3. Step 3: Cross multiply
    133,859.36x = 200,521.25 × 80,521.92
  4. Step 4: Simplify right side
    133,859.36x = 16,146,356,287.65
  5. Step 5: Solve for x
    x = 16,146,356,287.65/133,859.36
  6. Step 6: Final answer
    x = 120,621.80

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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.