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Finding the Fourth Proportional to 103,325.96, 155,048.07 and 40,137.90

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Solution

The fourth proportional to 103,325.96, 155,048.07 and 40,137.90 is: 60,229.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,325.96 : 155,048.07 = 40,137.90 : x
  2. Step 2: Convert to fraction form
    103,325.96/155,048.07 = 40,137.90/x
  3. Step 3: Cross multiply
    103,325.96x = 155,048.07 × 40,137.90
  4. Step 4: Simplify right side
    103,325.96x = 6,223,303,497.94
  5. Step 5: Solve for x
    x = 6,223,303,497.94/103,325.96
  6. Step 6: Final answer
    x = 60,229.81

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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.