Home / 143,021.33-197,442.93-100,768.49

Finding the Fourth Proportional to 143,021.33, 197,442.93 and 100,768.49

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Solution

The fourth proportional to 143,021.33, 197,442.93 and 100,768.49 is: 139,112.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,021.33 : 197,442.93 = 100,768.49 : x
  2. Step 2: Convert to fraction form
    143,021.33/197,442.93 = 100,768.49/x
  3. Step 3: Cross multiply
    143,021.33x = 197,442.93 × 100,768.49
  4. Step 4: Simplify right side
    143,021.33x = 19,896,026,048.35
  5. Step 5: Solve for x
    x = 19,896,026,048.35/143,021.33
  6. Step 6: Final answer
    x = 139,112.30

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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.