Home / 105,819.78-146,021.64-62,791.85

Finding the Fourth Proportional to 105,819.78, 146,021.64 and 62,791.85

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Solution

The fourth proportional to 105,819.78, 146,021.64 and 62,791.85 is: 86,647.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,819.78 : 146,021.64 = 62,791.85 : x
  2. Step 2: Convert to fraction form
    105,819.78/146,021.64 = 62,791.85/x
  3. Step 3: Cross multiply
    105,819.78x = 146,021.64 × 62,791.85
  4. Step 4: Simplify right side
    105,819.78x = 9,168,968,185.53
  5. Step 5: Solve for x
    x = 9,168,968,185.53/105,819.78
  6. Step 6: Final answer
    x = 86,647.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.