Finding the Fourth Proportional to 120,315.09, 180,371.16 and 75,843.84
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Solution
The fourth proportional to 120,315.09, 180,371.16 and 75,843.84 is: 113,701.79
Step by Step Solution
- Step 1: Write the proportion equation
120,315.09 : 180,371.16 = 75,843.84 : x - Step 2: Convert to fraction form
120,315.09/180,371.16 = 75,843.84/x - Step 3: Cross multiply
120,315.09x = 180,371.16 × 75,843.84 - Step 4: Simplify right side
120,315.09x = 13,680,041,399.65 - Step 5: Solve for x
x = 13,680,041,399.65/120,315.09 - Step 6: Final answer
x = 113,701.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.