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Finding the Fourth Proportional to 133,229.94, 183,776.87 and 87,891.82

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Solution

The fourth proportional to 133,229.94, 183,776.87 and 87,891.82 is: 121,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,229.94 : 183,776.87 = 87,891.82 : x
  2. Step 2: Convert to fraction form
    133,229.94/183,776.87 = 87,891.82/x
  3. Step 3: Cross multiply
    133,229.94x = 183,776.87 × 87,891.82
  4. Step 4: Simplify right side
    133,229.94x = 16,152,483,578.20
  5. Step 5: Solve for x
    x = 16,152,483,578.20/133,229.94
  6. Step 6: Final answer
    x = 121,237.64

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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.