Finding the Fourth Proportional to 123,443.48, 170,283.79 and 100,497.99
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Solution
The fourth proportional to 123,443.48, 170,283.79 and 100,497.99 is: 138,631.69
Step by Step Solution
- Step 1: Write the proportion equation
123,443.48 : 170,283.79 = 100,497.99 : x - Step 2: Convert to fraction form
123,443.48/170,283.79 = 100,497.99/x - Step 3: Cross multiply
123,443.48x = 170,283.79 × 100,497.99 - Step 4: Simplify right side
123,443.48x = 17,113,178,624.58 - Step 5: Solve for x
x = 17,113,178,624.58/123,443.48 - Step 6: Final answer
x = 138,631.69
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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.