Finding the Fourth Proportional to 136,001.89, 187,678.87 and 75,570.99
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Solution
The fourth proportional to 136,001.89, 187,678.87 and 75,570.99 is: 104,285.89
Step by Step Solution
- Step 1: Write the proportion equation
136,001.89 : 187,678.87 = 75,570.99 : x - Step 2: Convert to fraction form
136,001.89/187,678.87 = 75,570.99/x - Step 3: Cross multiply
136,001.89x = 187,678.87 × 75,570.99 - Step 4: Simplify right side
136,001.89x = 14,183,078,007.98 - Step 5: Solve for x
x = 14,183,078,007.98/136,001.89 - Step 6: Final answer
x = 104,285.89
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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.