Home / 128,110,485.80-192,165,728.70-122,158,346.60

Finding the Fourth Proportional to 128,110,485.80, 192,165,728.70 and 122,158,346.60

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Solution

The fourth proportional to 128,110,485.80, 192,165,728.70 and 122,158,346.60 is: 183,237,519.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,110,485.80 : 192,165,728.70 = 122,158,346.60 : x
  2. Step 2: Convert to fraction form
    128,110,485.80/192,165,728.70 = 122,158,346.60/x
  3. Step 3: Cross multiply
    128,110,485.80x = 192,165,728.70 × 122,158,346.60
  4. Step 4: Simplify right side
    128,110,485.80x = 23,474,647,691,176,164
  5. Step 5: Solve for x
    x = 23,474,647,691,176,164/128,110,485.80
  6. Step 6: Final answer
    x = 183,237,519.90

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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.