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Finding the Fourth Proportional to 128,383.56, 192,585.06 and 34,887.96

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Solution

The fourth proportional to 128,383.56, 192,585.06 and 34,887.96 is: 52,334.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,383.56 : 192,585.06 = 34,887.96 : x
  2. Step 2: Convert to fraction form
    128,383.56/192,585.06 = 34,887.96/x
  3. Step 3: Cross multiply
    128,383.56x = 192,585.06 × 34,887.96
  4. Step 4: Simplify right side
    128,383.56x = 6,718,899,869.88
  5. Step 5: Solve for x
    x = 6,718,899,869.88/128,383.56
  6. Step 6: Final answer
    x = 52,334.58

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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.