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Finding the Fourth Proportional to 118,164.32, 163,202.78 and 86,042.55

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Solution

The fourth proportional to 118,164.32, 163,202.78 and 86,042.55 is: 118,837.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,164.32 : 163,202.78 = 86,042.55 : x
  2. Step 2: Convert to fraction form
    118,164.32/163,202.78 = 86,042.55/x
  3. Step 3: Cross multiply
    118,164.32x = 163,202.78 × 86,042.55
  4. Step 4: Simplify right side
    118,164.32x = 14,042,383,358.29
  5. Step 5: Solve for x
    x = 14,042,383,358.29/118,164.32
  6. Step 6: Final answer
    x = 118,837.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.