Finding the Fourth Proportional to 106,830.75, 160,020.09 and 69,279.27
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Solution
The fourth proportional to 106,830.75, 160,020.09 and 69,279.27 is: 103,772.32
Step by Step Solution
- Step 1: Write the proportion equation
106,830.75 : 160,020.09 = 69,279.27 : x - Step 2: Convert to fraction form
106,830.75/160,020.09 = 69,279.27/x - Step 3: Cross multiply
106,830.75x = 160,020.09 × 69,279.27 - Step 4: Simplify right side
106,830.75x = 11,086,075,020.53 - Step 5: Solve for x
x = 11,086,075,020.53/106,830.75 - Step 6: Final answer
x = 103,772.32
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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.