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Finding the Fourth Proportional to 103,673.37, 155,491.21 and 28,774.69

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Solution

The fourth proportional to 103,673.37, 155,491.21 and 28,774.69 is: 43,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,673.37 : 155,491.21 = 28,774.69 : x
  2. Step 2: Convert to fraction form
    103,673.37/155,491.21 = 28,774.69/x
  3. Step 3: Cross multiply
    103,673.37x = 155,491.21 × 28,774.69
  4. Step 4: Simplify right side
    103,673.37x = 4,474,211,365.47
  5. Step 5: Solve for x
    x = 4,474,211,365.47/103,673.37
  6. Step 6: Final answer
    x = 43,156.80

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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.