Finding the Fourth Proportional to 119,355.19, 164,706.87 and 65,640.21
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Solution
The fourth proportional to 119,355.19, 164,706.87 and 65,640.21 is: 90,581.68
Step by Step Solution
- Step 1: Write the proportion equation
119,355.19 : 164,706.87 = 65,640.21 : x - Step 2: Convert to fraction form
119,355.19/164,706.87 = 65,640.21/x - Step 3: Cross multiply
119,355.19x = 164,706.87 × 65,640.21 - Step 4: Simplify right side
119,355.19x = 10,811,393,535.24 - Step 5: Solve for x
x = 10,811,393,535.24/119,355.19 - Step 6: Final answer
x = 90,581.68
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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.