Finding the Fourth Proportional to 157,665.38, 217,582.83 and 86,049.99
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Solution
The fourth proportional to 157,665.38, 217,582.83 and 86,049.99 is: 118,751.50
Step by Step Solution
- Step 1: Write the proportion equation
157,665.38 : 217,582.83 = 86,049.99 : x - Step 2: Convert to fraction form
157,665.38/217,582.83 = 86,049.99/x - Step 3: Cross multiply
157,665.38x = 217,582.83 × 86,049.99 - Step 4: Simplify right side
157,665.38x = 18,723,000,345.67 - Step 5: Solve for x
x = 18,723,000,345.67/157,665.38 - Step 6: Final answer
x = 118,751.50
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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.