Home / 128,515.73-192,781.15-49,630.37

Finding the Fourth Proportional to 128,515.73, 192,781.15 and 49,630.37

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Solution

The fourth proportional to 128,515.73, 192,781.15 and 49,630.37 is: 74,448.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,515.73 : 192,781.15 = 49,630.37 : x
  2. Step 2: Convert to fraction form
    128,515.73/192,781.15 = 49,630.37/x
  3. Step 3: Cross multiply
    128,515.73x = 192,781.15 × 49,630.37
  4. Step 4: Simplify right side
    128,515.73x = 9,567,798,715.54
  5. Step 5: Solve for x
    x = 9,567,798,715.54/128,515.73
  6. Step 6: Final answer
    x = 74,448.47

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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.