Finding the Fourth Proportional to 154,230.85, 212,837.12 and 86,247.05
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Solution
The fourth proportional to 154,230.85, 212,837.12 and 86,247.05 is: 119,020.11
Step by Step Solution
- Step 1: Write the proportion equation
154,230.85 : 212,837.12 = 86,247.05 : x - Step 2: Convert to fraction form
154,230.85/212,837.12 = 86,247.05/x - Step 3: Cross multiply
154,230.85x = 212,837.12 × 86,247.05 - Step 4: Simplify right side
154,230.85x = 18,356,572,235.08 - Step 5: Solve for x
x = 18,356,572,235.08/154,230.85 - Step 6: Final answer
x = 119,020.11
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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.