Home / 128,520.28-192,749.37-49,584.16

Finding the Fourth Proportional to 128,520.28, 192,749.37 and 49,584.16

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Solution

The fourth proportional to 128,520.28, 192,749.37 and 49,584.16 is: 74,364.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,520.28 : 192,749.37 = 49,584.16 : x
  2. Step 2: Convert to fraction form
    128,520.28/192,749.37 = 49,584.16/x
  3. Step 3: Cross multiply
    128,520.28x = 192,749.37 × 49,584.16
  4. Step 4: Simplify right side
    128,520.28x = 9,557,315,601.98
  5. Step 5: Solve for x
    x = 9,557,315,601.98/128,520.28
  6. Step 6: Final answer
    x = 74,364.26

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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.