Home / 221,321,123.20-332,039,745.60-85,010,953.60

Finding the Fourth Proportional to 221,321,123.20, 332,039,745.60 and 85,010,953.60

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Solution

The fourth proportional to 221,321,123.20, 332,039,745.60 and 85,010,953.60 is: 127,538,731.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,321,123.20 : 332,039,745.60 = 85,010,953.60 : x
  2. Step 2: Convert to fraction form
    221,321,123.20/332,039,745.60 = 85,010,953.60/x
  3. Step 3: Cross multiply
    221,321,123.20x = 332,039,745.60 × 85,010,953.60
  4. Step 4: Simplify right side
    221,321,123.20x = 28,227,015,406,557,404
  5. Step 5: Solve for x
    x = 28,227,015,406,557,404/221,321,123.20
  6. Step 6: Final answer
    x = 127,538,731.95

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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.