Finding the Fourth Proportional to 122,168,563.38, 168,591,105.81 and 67,163,938.74
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Solution
The fourth proportional to 122,168,563.38, 168,591,105.81 and 67,163,938.74 is: 92,685,404.41
Step by Step Solution
- Step 1: Write the proportion equation
122,168,563.38 : 168,591,105.81 = 67,163,938.74 : x - Step 2: Convert to fraction form
122,168,563.38/168,591,105.81 = 67,163,938.74/x - Step 3: Cross multiply
122,168,563.38x = 168,591,105.81 × 67,163,938.74 - Step 4: Simplify right side
122,168,563.38x = 11,323,242,702,731,698 - Step 5: Solve for x
x = 11,323,242,702,731,698/122,168,563.38 - Step 6: Final answer
x = 92,685,404.41
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.