Finding the Fourth Proportional to 121,915.36, 182,887.44 and 51,755.68
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Solution
The fourth proportional to 121,915.36, 182,887.44 and 51,755.68 is: 77,639.63
Step by Step Solution
- Step 1: Write the proportion equation
121,915.36 : 182,887.44 = 51,755.68 : x - Step 2: Convert to fraction form
121,915.36/182,887.44 = 51,755.68/x - Step 3: Cross multiply
121,915.36x = 182,887.44 × 51,755.68 - Step 4: Simplify right side
121,915.36x = 9,465,463,820.66 - Step 5: Solve for x
x = 9,465,463,820.66/121,915.36 - Step 6: Final answer
x = 77,639.63
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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.