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Finding the Fourth Proportional to 125,601.62, 188,562.33 and 81,413.28

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Solution

The fourth proportional to 125,601.62, 188,562.33 and 81,413.28 is: 122,223.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,601.62 : 188,562.33 = 81,413.28 : x
  2. Step 2: Convert to fraction form
    125,601.62/188,562.33 = 81,413.28/x
  3. Step 3: Cross multiply
    125,601.62x = 188,562.33 × 81,413.28
  4. Step 4: Simplify right side
    125,601.62x = 15,351,477,769.74
  5. Step 5: Solve for x
    x = 15,351,477,769.74/125,601.62
  6. Step 6: Final answer
    x = 122,223.57

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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.