Home / 147,504,940.20-221,257,410.30-78,630,186.60

Finding the Fourth Proportional to 147,504,940.20, 221,257,410.30 and 78,630,186.60

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Solution

The fourth proportional to 147,504,940.20, 221,257,410.30 and 78,630,186.60 is: 117,945,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,504,940.20 : 221,257,410.30 = 78,630,186.60 : x
  2. Step 2: Convert to fraction form
    147,504,940.20/221,257,410.30 = 78,630,186.60/x
  3. Step 3: Cross multiply
    147,504,940.20x = 221,257,410.30 × 78,630,186.60
  4. Step 4: Simplify right side
    147,504,940.20x = 17,397,511,458,521,762
  5. Step 5: Solve for x
    x = 17,397,511,458,521,762/147,504,940.20
  6. Step 6: Final answer
    x = 117,945,279.90

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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.