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Finding the Fourth Proportional to 103,794.60, 155,363.85 and 74,270.10

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Solution

The fourth proportional to 103,794.60, 155,363.85 and 74,270.10 is: 111,170.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,794.60 : 155,363.85 = 74,270.10 : x
  2. Step 2: Convert to fraction form
    103,794.60/155,363.85 = 74,270.10/x
  3. Step 3: Cross multiply
    103,794.60x = 155,363.85 × 74,270.10
  4. Step 4: Simplify right side
    103,794.60x = 11,538,888,675.89
  5. Step 5: Solve for x
    x = 11,538,888,675.89/103,794.60
  6. Step 6: Final answer
    x = 111,170.41

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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.