Finding the Fourth Proportional to 154,956.18, 213,841.11 and 86,971.79
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Solution
The fourth proportional to 154,956.18, 213,841.11 and 86,971.79 is: 120,021.96
Step by Step Solution
- Step 1: Write the proportion equation
154,956.18 : 213,841.11 = 86,971.79 : x - Step 2: Convert to fraction form
154,956.18/213,841.11 = 86,971.79/x - Step 3: Cross multiply
154,956.18x = 213,841.11 × 86,971.79 - Step 4: Simplify right side
154,956.18x = 18,598,144,329.72 - Step 5: Solve for x
x = 18,598,144,329.72/154,956.18 - Step 6: Final answer
x = 120,021.96
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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.