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Finding the Fourth Proportional to 133,073.57, 199,643.09 and 39,579.32

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Solution

The fourth proportional to 133,073.57, 199,643.09 and 39,579.32 is: 59,378.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,073.57 : 199,643.09 = 39,579.32 : x
  2. Step 2: Convert to fraction form
    133,073.57/199,643.09 = 39,579.32/x
  3. Step 3: Cross multiply
    133,073.57x = 199,643.09 × 39,579.32
  4. Step 4: Simplify right side
    133,073.57x = 7,901,736,548.79
  5. Step 5: Solve for x
    x = 7,901,736,548.79/133,073.57
  6. Step 6: Final answer
    x = 59,378.71

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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.