Finding the Fourth Proportional to 119,729.41, 179,472.84 and 77,636.19
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Solution
The fourth proportional to 119,729.41, 179,472.84 and 77,636.19 is: 116,375.65
Step by Step Solution
- Step 1: Write the proportion equation
119,729.41 : 179,472.84 = 77,636.19 : x - Step 2: Convert to fraction form
119,729.41/179,472.84 = 77,636.19/x - Step 3: Cross multiply
119,729.41x = 179,472.84 × 77,636.19 - Step 4: Simplify right side
119,729.41x = 13,933,587,506.08 - Step 5: Solve for x
x = 13,933,587,506.08/119,729.41 - Step 6: Final answer
x = 116,375.65
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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.