Finding the Fourth Proportional to 108,537.20, 162,805.80 and 73,107.80
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Solution
The fourth proportional to 108,537.20, 162,805.80 and 73,107.80 is: 109,661.70
Step by Step Solution
- Step 1: Write the proportion equation
108,537.20 : 162,805.80 = 73,107.80 : x - Step 2: Convert to fraction form
108,537.20/162,805.80 = 73,107.80/x - Step 3: Cross multiply
108,537.20x = 162,805.80 × 73,107.80 - Step 4: Simplify right side
108,537.20x = 11,902,373,865.24 - Step 5: Solve for x
x = 11,902,373,865.24/108,537.20 - Step 6: Final answer
x = 109,661.70
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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.