Finding the Fourth Proportional to 153,729.26, 212,146.73 and 85,744.55
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Solution
The fourth proportional to 153,729.26, 212,146.73 and 85,744.55 is: 118,327.67
Step by Step Solution
- Step 1: Write the proportion equation
153,729.26 : 212,146.73 = 85,744.55 : x - Step 2: Convert to fraction form
153,729.26/212,146.73 = 85,744.55/x - Step 3: Cross multiply
153,729.26x = 212,146.73 × 85,744.55 - Step 4: Simplify right side
153,729.26x = 18,190,424,408.37 - Step 5: Solve for x
x = 18,190,424,408.37/153,729.26 - Step 6: Final answer
x = 118,327.67
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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.