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Finding the Fourth Proportional to 118,774.62, 163,911.61 and 67,786.34

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Solution

The fourth proportional to 118,774.62, 163,911.61 and 67,786.34 is: 93,546.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,774.62 : 163,911.61 = 67,786.34 : x
  2. Step 2: Convert to fraction form
    118,774.62/163,911.61 = 67,786.34/x
  3. Step 3: Cross multiply
    118,774.62x = 163,911.61 × 67,786.34
  4. Step 4: Simplify right side
    118,774.62x = 11,110,967,390.58
  5. Step 5: Solve for x
    x = 11,110,967,390.58/118,774.62
  6. Step 6: Final answer
    x = 93,546.65

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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.