Home / 128,028.65-192,067.69-49,136.73

Finding the Fourth Proportional to 128,028.65, 192,067.69 and 49,136.73

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Solution

The fourth proportional to 128,028.65, 192,067.69 and 49,136.73 is: 73,714.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,028.65 : 192,067.69 = 49,136.73 : x
  2. Step 2: Convert to fraction form
    128,028.65/192,067.69 = 49,136.73/x
  3. Step 3: Cross multiply
    128,028.65x = 192,067.69 × 49,136.73
  4. Step 4: Simplify right side
    128,028.65x = 9,437,577,681.58
  5. Step 5: Solve for x
    x = 9,437,577,681.58/128,028.65
  6. Step 6: Final answer
    x = 73,714.58

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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.