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Finding the Fourth Proportional to 103,413.70, 155,133.78 and 36,860.55

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Solution

The fourth proportional to 103,413.70, 155,133.78 and 36,860.55 is: 55,295.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,413.70 : 155,133.78 = 36,860.55 : x
  2. Step 2: Convert to fraction form
    103,413.70/155,133.78 = 36,860.55/x
  3. Step 3: Cross multiply
    103,413.70x = 155,133.78 × 36,860.55
  4. Step 4: Simplify right side
    103,413.70x = 5,718,316,454.38
  5. Step 5: Solve for x
    x = 5,718,316,454.38/103,413.70
  6. Step 6: Final answer
    x = 55,295.54

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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.