Finding the Fourth Proportional to 157,809.44, 217,768.82 and 86,175.48
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Solution
The fourth proportional to 157,809.44, 217,768.82 and 86,175.48 is: 118,917.68
Step by Step Solution
- Step 1: Write the proportion equation
157,809.44 : 217,768.82 = 86,175.48 : x - Step 2: Convert to fraction form
157,809.44/217,768.82 = 86,175.48/x - Step 3: Cross multiply
157,809.44x = 217,768.82 × 86,175.48 - Step 4: Simplify right side
157,809.44x = 18,766,332,592.53 - Step 5: Solve for x
x = 18,766,332,592.53/157,809.44 - Step 6: Final answer
x = 118,917.68
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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.