Finding the Fourth Proportional to 159,386.36, 219,879.30 and 102,815.96
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Solution
The fourth proportional to 159,386.36, 219,879.30 and 102,815.96 is: 141,838.37
Step by Step Solution
- Step 1: Write the proportion equation
159,386.36 : 219,879.30 = 102,815.96 : x - Step 2: Convert to fraction form
159,386.36/219,879.30 = 102,815.96/x - Step 3: Cross multiply
159,386.36x = 219,879.30 × 102,815.96 - Step 4: Simplify right side
159,386.36x = 22,607,101,313.63 - Step 5: Solve for x
x = 22,607,101,313.63/159,386.36 - Step 6: Final answer
x = 141,838.37
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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.