Finding the Fourth Proportional to 144,965.80, 217,448.70 and 91,821.70
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Solution
The fourth proportional to 144,965.80, 217,448.70 and 91,821.70 is: 137,732.55
Step by Step Solution
- Step 1: Write the proportion equation
144,965.80 : 217,448.70 = 91,821.70 : x - Step 2: Convert to fraction form
144,965.80/217,448.70 = 91,821.70/x - Step 3: Cross multiply
144,965.80x = 217,448.70 × 91,821.70 - Step 4: Simplify right side
144,965.80x = 19,966,509,296.79 - Step 5: Solve for x
x = 19,966,509,296.79/144,965.80 - Step 6: Final answer
x = 137,732.55
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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.