Finding the Fourth Proportional to 157,649.29, 217,560.62 and 86,033.92
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Solution
The fourth proportional to 157,649.29, 217,560.62 and 86,033.92 is: 118,729.32
Step by Step Solution
- Step 1: Write the proportion equation
157,649.29 : 217,560.62 = 86,033.92 : x - Step 2: Convert to fraction form
157,649.29/217,560.62 = 86,033.92/x - Step 3: Cross multiply
157,649.29x = 217,560.62 × 86,033.92 - Step 4: Simplify right side
157,649.29x = 18,717,592,976.23 - Step 5: Solve for x
x = 18,717,592,976.23/157,649.29 - Step 6: Final answer
x = 118,729.32
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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.