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Finding the Fourth Proportional to 133,388.05, 200,008.22 and 54,557.64

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Solution

The fourth proportional to 133,388.05, 200,008.22 and 54,557.64 is: 81,806.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,388.05 : 200,008.22 = 54,557.64 : x
  2. Step 2: Convert to fraction form
    133,388.05/200,008.22 = 54,557.64/x
  3. Step 3: Cross multiply
    133,388.05x = 200,008.22 × 54,557.64
  4. Step 4: Simplify right side
    133,388.05x = 10,911,976,463.80
  5. Step 5: Solve for x
    x = 10,911,976,463.80/133,388.05
  6. Step 6: Final answer
    x = 81,806.25

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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.