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Finding the Fourth Proportional to 128,201.16, 192,299.64 and 49,332.48

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Solution

The fourth proportional to 128,201.16, 192,299.64 and 49,332.48 is: 73,997.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,201.16 : 192,299.64 = 49,332.48 : x
  2. Step 2: Convert to fraction form
    128,201.16/192,299.64 = 49,332.48/x
  3. Step 3: Cross multiply
    128,201.16x = 192,299.64 × 49,332.48
  4. Step 4: Simplify right side
    128,201.16x = 9,486,618,144.31
  5. Step 5: Solve for x
    x = 9,486,618,144.31/128,201.16
  6. Step 6: Final answer
    x = 73,997.91

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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.