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Finding the Fourth Proportional to 118,768.98, 163,855.59 and 67,784.54

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Solution

The fourth proportional to 118,768.98, 163,855.59 and 67,784.54 is: 93,516.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,768.98 : 163,855.59 = 67,784.54 : x
  2. Step 2: Convert to fraction form
    118,768.98/163,855.59 = 67,784.54/x
  3. Step 3: Cross multiply
    118,768.98x = 163,855.59 × 67,784.54
  4. Step 4: Simplify right side
    118,768.98x = 11,106,875,794.58
  5. Step 5: Solve for x
    x = 11,106,875,794.58/118,768.98
  6. Step 6: Final answer
    x = 93,516.64

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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.