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Finding the Fourth Proportional to 118,702.94, 163,819.16 and 67,716.80

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Solution

The fourth proportional to 118,702.94, 163,819.16 and 67,716.80 is: 93,454.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,702.94 : 163,819.16 = 67,716.80 : x
  2. Step 2: Convert to fraction form
    118,702.94/163,819.16 = 67,716.80/x
  3. Step 3: Cross multiply
    118,702.94x = 163,819.16 × 67,716.80
  4. Step 4: Simplify right side
    118,702.94x = 11,093,308,136.21
  5. Step 5: Solve for x
    x = 11,093,308,136.21/118,702.94
  6. Step 6: Final answer
    x = 93,454.37

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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.