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Finding the Fourth Proportional to 133,266.80, 199,934.80 and 39,772.56

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Solution

The fourth proportional to 133,266.80, 199,934.80 and 39,772.56 is: 59,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,266.80 : 199,934.80 = 39,772.56 : x
  2. Step 2: Convert to fraction form
    133,266.80/199,934.80 = 39,772.56/x
  3. Step 3: Cross multiply
    133,266.80x = 199,934.80 × 39,772.56
  4. Step 4: Simplify right side
    133,266.80x = 7,951,918,829.09
  5. Step 5: Solve for x
    x = 7,951,918,829.09/133,266.80
  6. Step 6: Final answer
    x = 59,669.17

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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.