Finding the Fourth Proportional to 115,755.75, 159,763.41 and 68,009.09
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Solution
The fourth proportional to 115,755.75, 159,763.41 and 68,009.09 is: 93,864.57
Step by Step Solution
- Step 1: Write the proportion equation
115,755.75 : 159,763.41 = 68,009.09 : x - Step 2: Convert to fraction form
115,755.75/159,763.41 = 68,009.09/x - Step 3: Cross multiply
115,755.75x = 159,763.41 × 68,009.09 - Step 4: Simplify right side
115,755.75x = 10,865,363,330.58 - Step 5: Solve for x
x = 10,865,363,330.58/115,755.75 - Step 6: Final answer
x = 93,864.57
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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.