Finding the Fourth Proportional to 154,325.35, 212,956.85 and 86,336.99
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Solution
The fourth proportional to 154,325.35, 212,956.85 and 86,336.99 is: 119,138.25
Step by Step Solution
- Step 1: Write the proportion equation
154,325.35 : 212,956.85 = 86,336.99 : x - Step 2: Convert to fraction form
154,325.35/212,956.85 = 86,336.99/x - Step 3: Cross multiply
154,325.35x = 212,956.85 × 86,336.99 - Step 4: Simplify right side
154,325.35x = 18,386,052,892.88 - Step 5: Solve for x
x = 18,386,052,892.88/154,325.35 - Step 6: Final answer
x = 119,138.25
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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.