Finding the Fourth Proportional to 122,733,519.54, 169,372,212.23 and 66,978,940.09
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Solution
The fourth proportional to 122,733,519.54, 169,372,212.23 and 66,978,940.09 is: 92,430,912.91
Step by Step Solution
- Step 1: Write the proportion equation
122,733,519.54 : 169,372,212.23 = 66,978,940.09 : x - Step 2: Convert to fraction form
122,733,519.54/169,372,212.23 = 66,978,940.09/x - Step 3: Cross multiply
122,733,519.54x = 169,372,212.23 × 66,978,940.09 - Step 4: Simplify right side
122,733,519.54x = 11,344,371,255,863,936 - Step 5: Solve for x
x = 11,344,371,255,863,936/122,733,519.54 - Step 6: Final answer
x = 92,430,912.91
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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.