Finding the Fourth Proportional to 119,863.65, 165,474.01 and 87,561.99
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Solution
The fourth proportional to 119,863.65, 165,474.01 and 87,561.99 is: 120,880.97
Step by Step Solution
- Step 1: Write the proportion equation
119,863.65 : 165,474.01 = 87,561.99 : x - Step 2: Convert to fraction form
119,863.65/165,474.01 = 87,561.99/x - Step 3: Cross multiply
119,863.65x = 165,474.01 × 87,561.99 - Step 4: Simplify right side
119,863.65x = 14,489,234,241.47 - Step 5: Solve for x
x = 14,489,234,241.47/119,863.65 - Step 6: Final answer
x = 120,880.97
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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.