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Finding the Fourth Proportional to 118,644.70, 163,729.68 and 64,929.73

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Solution

The fourth proportional to 118,644.70, 163,729.68 and 64,929.73 is: 89,603.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,644.70 : 163,729.68 = 64,929.73 : x
  2. Step 2: Convert to fraction form
    118,644.70/163,729.68 = 64,929.73/x
  3. Step 3: Cross multiply
    118,644.70x = 163,729.68 × 64,929.73
  4. Step 4: Simplify right side
    118,644.70x = 10,630,923,915.39
  5. Step 5: Solve for x
    x = 10,630,923,915.39/118,644.70
  6. Step 6: Final answer
    x = 89,603.02

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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.