Finding the Fourth Proportional to 98,193.72, 135,617.68 and 66,307.26
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Solution
The fourth proportional to 98,193.72, 135,617.68 and 66,307.26 is: 91,578.53
Step by Step Solution
- Step 1: Write the proportion equation
98,193.72 : 135,617.68 = 66,307.26 : x - Step 2: Convert to fraction form
98,193.72/135,617.68 = 66,307.26/x - Step 3: Cross multiply
98,193.72x = 135,617.68 × 66,307.26 - Step 4: Simplify right side
98,193.72x = 8,992,436,768.36 - Step 5: Solve for x
x = 8,992,436,768.36/98,193.72 - Step 6: Final answer
x = 91,578.53
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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.