Home / 118,942.20-178,413.30-90,948.60

Finding the Fourth Proportional to 118,942.20, 178,413.30 and 90,948.60

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Solution

The fourth proportional to 118,942.20, 178,413.30 and 90,948.60 is: 136,422.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,942.20 : 178,413.30 = 90,948.60 : x
  2. Step 2: Convert to fraction form
    118,942.20/178,413.30 = 90,948.60/x
  3. Step 3: Cross multiply
    118,942.20x = 178,413.30 × 90,948.60
  4. Step 4: Simplify right side
    118,942.20x = 16,226,439,856.38
  5. Step 5: Solve for x
    x = 16,226,439,856.38/118,942.20
  6. Step 6: Final answer
    x = 136,422.90

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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.