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Finding the Fourth Proportional to 128,339.92, 192,495.16 and 33,579.25

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Solution

The fourth proportional to 128,339.92, 192,495.16 and 33,579.25 is: 50,365.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,339.92 : 192,495.16 = 33,579.25 : x
  2. Step 2: Convert to fraction form
    128,339.92/192,495.16 = 33,579.25/x
  3. Step 3: Cross multiply
    128,339.92x = 192,495.16 × 33,579.25
  4. Step 4: Simplify right side
    128,339.92x = 6,463,843,101.43
  5. Step 5: Solve for x
    x = 6,463,843,101.43/128,339.92
  6. Step 6: Final answer
    x = 50,365.02

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1.5x scale

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.