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Finding the Fourth Proportional to 128,383.92, 192,592.32 and 39,646.44

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Solution

The fourth proportional to 128,383.92, 192,592.32 and 39,646.44 is: 59,474.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,383.92 : 192,592.32 = 39,646.44 : x
  2. Step 2: Convert to fraction form
    128,383.92/192,592.32 = 39,646.44/x
  3. Step 3: Cross multiply
    128,383.92x = 192,592.32 × 39,646.44
  4. Step 4: Simplify right side
    128,383.92x = 7,635,599,859.34
  5. Step 5: Solve for x
    x = 7,635,599,859.34/128,383.92
  6. Step 6: Final answer
    x = 59,474.74

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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.