Finding the Fourth Proportional to 135,306.26, 186,718.83 and 74,879.42
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Solution
The fourth proportional to 135,306.26, 186,718.83 and 74,879.42 is: 103,331.49
Step by Step Solution
- Step 1: Write the proportion equation
135,306.26 : 186,718.83 = 74,879.42 : x - Step 2: Convert to fraction form
135,306.26/186,718.83 = 74,879.42/x - Step 3: Cross multiply
135,306.26x = 186,718.83 × 74,879.42 - Step 4: Simplify right side
135,306.26x = 13,981,397,693.48 - Step 5: Solve for x
x = 13,981,397,693.48/135,306.26 - Step 6: Final answer
x = 103,331.49
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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.