Finding the Fourth Proportional to 135,162.75, 186,508.73 and 74,729.79
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Solution
The fourth proportional to 135,162.75, 186,508.73 and 74,729.79 is: 103,118.34
Step by Step Solution
- Step 1: Write the proportion equation
135,162.75 : 186,508.73 = 74,729.79 : x - Step 2: Convert to fraction form
135,162.75/186,508.73 = 74,729.79/x - Step 3: Cross multiply
135,162.75x = 186,508.73 × 74,729.79 - Step 4: Simplify right side
135,162.75x = 13,937,757,992.54 - Step 5: Solve for x
x = 13,937,757,992.54/135,162.75 - Step 6: Final answer
x = 103,118.34
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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.