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Finding the Fourth Proportional to 119,978.73, 165,563.83 and 68,983.36

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Solution

The fourth proportional to 119,978.73, 165,563.83 and 68,983.36 is: 95,193.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,978.73 : 165,563.83 = 68,983.36 : x
  2. Step 2: Convert to fraction form
    119,978.73/165,563.83 = 68,983.36/x
  3. Step 3: Cross multiply
    119,978.73x = 165,563.83 × 68,983.36
  4. Step 4: Simplify right side
    119,978.73x = 11,421,148,960.19
  5. Step 5: Solve for x
    x = 11,421,148,960.19/119,978.73
  6. Step 6: Final answer
    x = 95,193.11

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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.