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Finding the Fourth Proportional to 118,966.99, 164,183.07 and 67,978.54

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Solution

The fourth proportional to 118,966.99, 164,183.07 and 67,978.54 is: 93,815.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,966.99 : 164,183.07 = 67,978.54 : x
  2. Step 2: Convert to fraction form
    118,966.99/164,183.07 = 67,978.54/x
  3. Step 3: Cross multiply
    118,966.99x = 164,183.07 × 67,978.54
  4. Step 4: Simplify right side
    118,966.99x = 11,160,925,391.32
  5. Step 5: Solve for x
    x = 11,160,925,391.32/118,966.99
  6. Step 6: Final answer
    x = 93,815.31

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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.