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Finding the Fourth Proportional to 118,702.69, 163,818.81 and 67,716.55

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Solution

The fourth proportional to 118,702.69, 163,818.81 and 67,716.55 is: 93,454.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,702.69 : 163,818.81 = 67,716.55 : x
  2. Step 2: Convert to fraction form
    118,702.69/163,818.81 = 67,716.55/x
  3. Step 3: Cross multiply
    118,702.69x = 163,818.81 × 67,716.55
  4. Step 4: Simplify right side
    118,702.69x = 11,093,243,480.63
  5. Step 5: Solve for x
    x = 11,093,243,480.63/118,702.69
  6. Step 6: Final answer
    x = 93,454.02

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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.