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Finding the Fourth Proportional to 12,101,879.80, 16,985,147 and 12,101,879.80

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Solution

The fourth proportional to 12,101,879.80, 16,985,147 and 12,101,879.80 is: 16,985,147

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,101,879.80 : 16,985,147 = 12,101,879.80 : x
  2. Step 2: Convert to fraction form
    12,101,879.80/16,985,147 = 12,101,879.80/x
  3. Step 3: Cross multiply
    12,101,879.80x = 16,985,147 × 12,101,879.80
  4. Step 4: Simplify right side
    12,101,879.80x = 205,552,207,379,330.62
  5. Step 5: Solve for x
    x = 205,552,207,379,330.62/12,101,879.80
  6. Step 6: Final answer
    x = 16,985,147

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.