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Finding the Fourth Proportional to 104,212.78, 143,816.31 and 63,948.79

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Solution

The fourth proportional to 104,212.78, 143,816.31 and 63,948.79 is: 88,250.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,212.78 : 143,816.31 = 63,948.79 : x
  2. Step 2: Convert to fraction form
    104,212.78/143,816.31 = 63,948.79/x
  3. Step 3: Cross multiply
    104,212.78x = 143,816.31 × 63,948.79
  4. Step 4: Simplify right side
    104,212.78x = 9,196,879,006.76
  5. Step 5: Solve for x
    x = 9,196,879,006.76/104,212.78
  6. Step 6: Final answer
    x = 88,250.97

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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.