Home / 122,413.70-183,620.55-72,647.30

Finding the Fourth Proportional to 122,413.70, 183,620.55 and 72,647.30

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Solution

The fourth proportional to 122,413.70, 183,620.55 and 72,647.30 is: 108,970.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,413.70 : 183,620.55 = 72,647.30 : x
  2. Step 2: Convert to fraction form
    122,413.70/183,620.55 = 72,647.30/x
  3. Step 3: Cross multiply
    122,413.70x = 183,620.55 × 72,647.30
  4. Step 4: Simplify right side
    122,413.70x = 13,339,537,182.02
  5. Step 5: Solve for x
    x = 13,339,537,182.02/122,413.70
  6. Step 6: Final answer
    x = 108,970.95

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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.