Finding the Fourth Proportional to 157,786.28, 217,743.62 and 86,166.08
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Solution
The fourth proportional to 157,786.28, 217,743.62 and 86,166.08 is: 118,908.40
Step by Step Solution
- Step 1: Write the proportion equation
157,786.28 : 217,743.62 = 86,166.08 : x - Step 2: Convert to fraction form
157,786.28/217,743.62 = 86,166.08/x - Step 3: Cross multiply
157,786.28x = 217,743.62 × 86,166.08 - Step 4: Simplify right side
157,786.28x = 18,762,114,180.41 - Step 5: Solve for x
x = 18,762,114,180.41/157,786.28 - Step 6: Final answer
x = 118,908.40
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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.