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Finding the Fourth Proportional to 118,763.21, 163,893.78 and 65,048.06

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Solution

The fourth proportional to 118,763.21, 163,893.78 and 65,048.06 is: 89,766.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,763.21 : 163,893.78 = 65,048.06 : x
  2. Step 2: Convert to fraction form
    118,763.21/163,893.78 = 65,048.06/x
  3. Step 3: Cross multiply
    118,763.21x = 163,893.78 × 65,048.06
  4. Step 4: Simplify right side
    118,763.21x = 10,660,972,844.80
  5. Step 5: Solve for x
    x = 10,660,972,844.80/118,763.21
  6. Step 6: Final answer
    x = 89,766.63

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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.