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Finding the Fourth Proportional to 133,284.78, 183,935.61 and 72,853.74

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Solution

The fourth proportional to 133,284.78, 183,935.61 and 72,853.74 is: 100,539.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,284.78 : 183,935.61 = 72,853.74 : x
  2. Step 2: Convert to fraction form
    133,284.78/183,935.61 = 72,853.74/x
  3. Step 3: Cross multiply
    133,284.78x = 183,935.61 × 72,853.74
  4. Step 4: Simplify right side
    133,284.78x = 13,400,397,107.68
  5. Step 5: Solve for x
    x = 13,400,397,107.68/133,284.78
  6. Step 6: Final answer
    x = 100,539.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.