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Finding the Fourth Proportional to 103,442.40, 155,163.60 and 41,112.90

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Solution

The fourth proportional to 103,442.40, 155,163.60 and 41,112.90 is: 61,669.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,442.40 : 155,163.60 = 41,112.90 : x
  2. Step 2: Convert to fraction form
    103,442.40/155,163.60 = 41,112.90/x
  3. Step 3: Cross multiply
    103,442.40x = 155,163.60 × 41,112.90
  4. Step 4: Simplify right side
    103,442.40x = 6,379,225,570.44
  5. Step 5: Solve for x
    x = 6,379,225,570.44/103,442.40
  6. Step 6: Final answer
    x = 61,669.35

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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.