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Finding the Fourth Proportional to 128,636.05, 192,984.73 and 44,396.93

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Solution

The fourth proportional to 128,636.05, 192,984.73 and 44,396.93 is: 66,605.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,636.05 : 192,984.73 = 44,396.93 : x
  2. Step 2: Convert to fraction form
    128,636.05/192,984.73 = 44,396.93/x
  3. Step 3: Cross multiply
    128,636.05x = 192,984.73 × 44,396.93
  4. Step 4: Simplify right side
    128,636.05x = 8,567,929,548.88
  5. Step 5: Solve for x
    x = 8,567,929,548.88/128,636.05
  6. Step 6: Final answer
    x = 66,605.98

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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.