Finding the Fourth Proportional to 157,732.36, 217,673.79 and 86,112.65
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Solution
The fourth proportional to 157,732.36, 217,673.79 and 86,112.65 is: 118,837.17
Step by Step Solution
- Step 1: Write the proportion equation
157,732.36 : 217,673.79 = 86,112.65 : x - Step 2: Convert to fraction form
157,732.36/217,673.79 = 86,112.65/x - Step 3: Cross multiply
157,732.36x = 217,673.79 × 86,112.65 - Step 4: Simplify right side
157,732.36x = 18,744,466,892.44 - Step 5: Solve for x
x = 18,744,466,892.44/157,732.36 - Step 6: Final answer
x = 118,837.17
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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.