Finding the Fourth Proportional to 135,306.25, 186,718.01 and 74,879.44
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Solution
The fourth proportional to 135,306.25, 186,718.01 and 74,879.44 is: 103,331.07
Step by Step Solution
- Step 1: Write the proportion equation
135,306.25 : 186,718.01 = 74,879.44 : x - Step 2: Convert to fraction form
135,306.25/186,718.01 = 74,879.44/x - Step 3: Cross multiply
135,306.25x = 186,718.01 × 74,879.44 - Step 4: Simplify right side
135,306.25x = 13,981,339,606.72 - Step 5: Solve for x
x = 13,981,339,606.72/135,306.25 - Step 6: Final answer
x = 103,331.07
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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.