Home / 94,879.20-142,318.80-90,942.60

Finding the Fourth Proportional to 94,879.20, 142,318.80 and 90,942.60

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Solution

The fourth proportional to 94,879.20, 142,318.80 and 90,942.60 is: 136,413.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,879.20 : 142,318.80 = 90,942.60 : x
  2. Step 2: Convert to fraction form
    94,879.20/142,318.80 = 90,942.60/x
  3. Step 3: Cross multiply
    94,879.20x = 142,318.80 × 90,942.60
  4. Step 4: Simplify right side
    94,879.20x = 12,942,841,700.88
  5. Step 5: Solve for x
    x = 12,942,841,700.88/94,879.20
  6. Step 6: Final answer
    x = 136,413.90

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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.