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Finding the Fourth Proportional to 128,224.69, 192,165.09 and 99,795.97

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Solution

The fourth proportional to 128,224.69, 192,165.09 and 99,795.97 is: 149,560.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,224.69 : 192,165.09 = 99,795.97 : x
  2. Step 2: Convert to fraction form
    128,224.69/192,165.09 = 99,795.97/x
  3. Step 3: Cross multiply
    128,224.69x = 192,165.09 × 99,795.97
  4. Step 4: Simplify right side
    128,224.69x = 19,177,301,556.69
  5. Step 5: Solve for x
    x = 19,177,301,556.69/128,224.69
  6. Step 6: Final answer
    x = 149,560.13

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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.