Home / 128,032.64-192,021.60-49,119.20

Finding the Fourth Proportional to 128,032.64, 192,021.60 and 49,119.20

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Solution

The fourth proportional to 128,032.64, 192,021.60 and 49,119.20 is: 73,668.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,032.64 : 192,021.60 = 49,119.20 : x
  2. Step 2: Convert to fraction form
    128,032.64/192,021.60 = 49,119.20/x
  3. Step 3: Cross multiply
    128,032.64x = 192,021.60 × 49,119.20
  4. Step 4: Simplify right side
    128,032.64x = 9,431,947,374.72
  5. Step 5: Solve for x
    x = 9,431,947,374.72/128,032.64
  6. Step 6: Final answer
    x = 73,668.30

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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.