Finding the Fourth Proportional to 159,579.31, 220,216.81 and 87,965.99
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Solution
The fourth proportional to 159,579.31, 220,216.81 and 87,965.99 is: 121,391.62
Step by Step Solution
- Step 1: Write the proportion equation
159,579.31 : 220,216.81 = 87,965.99 : x - Step 2: Convert to fraction form
159,579.31/220,216.81 = 87,965.99/x - Step 3: Cross multiply
159,579.31x = 220,216.81 × 87,965.99 - Step 4: Simplify right side
159,579.31x = 19,371,589,706.29 - Step 5: Solve for x
x = 19,371,589,706.29/159,579.31 - Step 6: Final answer
x = 121,391.62
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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.