Finding the Fourth Proportional to 157,798.43, 217,752.27 and 86,163.92
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Solution
The fourth proportional to 157,798.43, 217,752.27 and 86,163.92 is: 118,900.99
Step by Step Solution
- Step 1: Write the proportion equation
157,798.43 : 217,752.27 = 86,163.92 : x - Step 2: Convert to fraction form
157,798.43/217,752.27 = 86,163.92/x - Step 3: Cross multiply
157,798.43x = 217,752.27 × 86,163.92 - Step 4: Simplify right side
157,798.43x = 18,762,389,172.10 - Step 5: Solve for x
x = 18,762,389,172.10/157,798.43 - Step 6: Final answer
x = 118,900.99
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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.