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Finding the Fourth Proportional to 118,676.45, 163,769.42 and 67,705.68

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Solution

The fourth proportional to 118,676.45, 163,769.42 and 67,705.68 is: 93,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,676.45 : 163,769.42 = 67,705.68 : x
  2. Step 2: Convert to fraction form
    118,676.45/163,769.42 = 67,705.68/x
  3. Step 3: Cross multiply
    118,676.45x = 163,769.42 × 67,705.68
  4. Step 4: Simplify right side
    118,676.45x = 11,088,120,113.57
  5. Step 5: Solve for x
    x = 11,088,120,113.57/118,676.45
  6. Step 6: Final answer
    x = 93,431.51

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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.