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Finding the Fourth Proportional to 118,413.70, 177,620.55 and 99,751.30

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Solution

The fourth proportional to 118,413.70, 177,620.55 and 99,751.30 is: 149,626.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,413.70 : 177,620.55 = 99,751.30 : x
  2. Step 2: Convert to fraction form
    118,413.70/177,620.55 = 99,751.30/x
  3. Step 3: Cross multiply
    118,413.70x = 177,620.55 × 99,751.30
  4. Step 4: Simplify right side
    118,413.70x = 17,717,880,769.22
  5. Step 5: Solve for x
    x = 17,717,880,769.22/118,413.70
  6. Step 6: Final answer
    x = 149,626.95

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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.