Home / 208,494,183.72-312,823,648.98-79,136,129.91

Finding the Fourth Proportional to 208,494,183.72, 312,823,648.98 and 79,136,129.91

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Solution

The fourth proportional to 208,494,183.72, 312,823,648.98 and 79,136,129.91 is: 118,735,460.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,494,183.72 : 312,823,648.98 = 79,136,129.91 : x
  2. Step 2: Convert to fraction form
    208,494,183.72/312,823,648.98 = 79,136,129.91/x
  3. Step 3: Cross multiply
    208,494,183.72x = 312,823,648.98 × 79,136,129.91
  4. Step 4: Simplify right side
    208,494,183.72x = 24,755,652,924,601,520
  5. Step 5: Solve for x
    x = 24,755,652,924,601,520/208,494,183.72
  6. Step 6: Final answer
    x = 118,735,460.54

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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.