Finding the Fourth Proportional to 112,220.88, 154,865.64 and 61,921.68
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Solution
The fourth proportional to 112,220.88, 154,865.64 and 61,921.68 is: 85,452.37
Step by Step Solution
- Step 1: Write the proportion equation
112,220.88 : 154,865.64 = 61,921.68 : x - Step 2: Convert to fraction form
112,220.88/154,865.64 = 61,921.68/x - Step 3: Cross multiply
112,220.88x = 154,865.64 × 61,921.68 - Step 4: Simplify right side
112,220.88x = 9,589,540,603.08 - Step 5: Solve for x
x = 9,589,540,603.08/112,220.88 - Step 6: Final answer
x = 85,452.37
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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.