Finding the Fourth Proportional to 154,194.96, 212,786.28 and 87,125.52
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Solution
The fourth proportional to 154,194.96, 212,786.28 and 87,125.52 is: 120,231.66
Step by Step Solution
- Step 1: Write the proportion equation
154,194.96 : 212,786.28 = 87,125.52 : x - Step 2: Convert to fraction form
154,194.96/212,786.28 = 87,125.52/x - Step 3: Cross multiply
154,194.96x = 212,786.28 × 87,125.52 - Step 4: Simplify right side
154,194.96x = 18,539,115,293.87 - Step 5: Solve for x
x = 18,539,115,293.87/154,194.96 - Step 6: Final answer
x = 120,231.66
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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.