Finding the Fourth Proportional to 99,207.75, 136,906.70 and 54,495.75
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Solution
The fourth proportional to 99,207.75, 136,906.70 and 54,495.75 is: 75,204.14
Step by Step Solution
- Step 1: Write the proportion equation
99,207.75 : 136,906.70 = 54,495.75 : x - Step 2: Convert to fraction form
99,207.75/136,906.70 = 54,495.75/x - Step 3: Cross multiply
99,207.75x = 136,906.70 × 54,495.75 - Step 4: Simplify right side
99,207.75x = 7,460,833,024.05 - Step 5: Solve for x
x = 7,460,833,024.05/99,207.75 - Step 6: Final answer
x = 75,204.14
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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.