Finding the Fourth Proportional to 216,622.62, 298,939.26 and 121,129.56
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Solution
The fourth proportional to 216,622.62, 298,939.26 and 121,129.56 is: 167,158.82
Step by Step Solution
- Step 1: Write the proportion equation
216,622.62 : 298,939.26 = 121,129.56 : x - Step 2: Convert to fraction form
216,622.62/298,939.26 = 121,129.56/x - Step 3: Cross multiply
216,622.62x = 298,939.26 × 121,129.56 - Step 4: Simplify right side
216,622.62x = 36,210,381,030.53 - Step 5: Solve for x
x = 36,210,381,030.53/216,622.62 - Step 6: Final answer
x = 167,158.82
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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.