Finding the Fourth Proportional to 157,735.41, 217,664.74 and 86,115.28
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Solution
The fourth proportional to 157,735.41, 217,664.74 and 86,115.28 is: 118,833.56
Step by Step Solution
- Step 1: Write the proportion equation
157,735.41 : 217,664.74 = 86,115.28 : x - Step 2: Convert to fraction form
157,735.41/217,664.74 = 86,115.28/x - Step 3: Cross multiply
157,735.41x = 217,664.74 × 86,115.28 - Step 4: Simplify right side
157,735.41x = 18,744,259,600.65 - Step 5: Solve for x
x = 18,744,259,600.65/157,735.41 - Step 6: Final answer
x = 118,833.56
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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.