Finding the Fourth Proportional to 209,511.99, 289,133.07 and 118,871.78
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Solution
The fourth proportional to 209,511.99, 289,133.07 and 118,871.78 is: 164,046.75
Step by Step Solution
- Step 1: Write the proportion equation
209,511.99 : 289,133.07 = 118,871.78 : x - Step 2: Convert to fraction form
209,511.99/289,133.07 = 118,871.78/x - Step 3: Cross multiply
209,511.99x = 289,133.07 × 118,871.78 - Step 4: Simplify right side
209,511.99x = 34,369,761,242.10 - Step 5: Solve for x
x = 34,369,761,242.10/209,511.99 - Step 6: Final answer
x = 164,046.75
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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.