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Finding the Fourth Proportional to 122,672.30, 183,878.85 and 69,968.30

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Solution

The fourth proportional to 122,672.30, 183,878.85 and 69,968.30 is: 104,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,672.30 : 183,878.85 = 69,968.30 : x
  2. Step 2: Convert to fraction form
    122,672.30/183,878.85 = 69,968.30/x
  3. Step 3: Cross multiply
    122,672.30x = 183,878.85 × 69,968.30
  4. Step 4: Simplify right side
    122,672.30x = 12,865,690,540.46
  5. Step 5: Solve for x
    x = 12,865,690,540.46/122,672.30
  6. Step 6: Final answer
    x = 104,878.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.