Finding the Fourth Proportional to 159,382.13, 219,947.36 and 87,761.97
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Solution
The fourth proportional to 159,382.13, 219,947.36 and 87,761.97 is: 121,111.53
Step by Step Solution
- Step 1: Write the proportion equation
159,382.13 : 219,947.36 = 87,761.97 : x - Step 2: Convert to fraction form
159,382.13/219,947.36 = 87,761.97/x - Step 3: Cross multiply
159,382.13x = 219,947.36 × 87,761.97 - Step 4: Simplify right side
159,382.13x = 19,303,013,171.09 - Step 5: Solve for x
x = 19,303,013,171.09/159,382.13 - Step 6: Final answer
x = 121,111.53
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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.