Finding the Fourth Proportional to 117,219.91, 161,704.00 and 74,126.79
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Solution
The fourth proportional to 117,219.91, 161,704.00 and 74,126.79 is: 102,257.35
Step by Step Solution
- Step 1: Write the proportion equation
117,219.91 : 161,704.00 = 74,126.79 : x - Step 2: Convert to fraction form
117,219.91/161,704.00 = 74,126.79/x - Step 3: Cross multiply
117,219.91x = 161,704.00 × 74,126.79 - Step 4: Simplify right side
117,219.91x = 11,986,597,456.32 - Step 5: Solve for x
x = 11,986,597,456.32/117,219.91 - Step 6: Final answer
x = 102,257.35
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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.