Finding the Fourth Proportional to 151,579.88, 209,171.20 and 87,059.62
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Solution
The fourth proportional to 151,579.88, 209,171.20 and 87,059.62 is: 120,137.09
Step by Step Solution
- Step 1: Write the proportion equation
151,579.88 : 209,171.20 = 87,059.62 : x - Step 2: Convert to fraction form
151,579.88/209,171.20 = 87,059.62/x - Step 3: Cross multiply
151,579.88x = 209,171.20 × 87,059.62 - Step 4: Simplify right side
151,579.88x = 18,210,365,818.70 - Step 5: Solve for x
x = 18,210,365,818.70/151,579.88 - Step 6: Final answer
x = 120,137.09
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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.