Finding the Fourth Proportional to 143,136.99, 197,582.09 and 122,912.71
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Solution
The fourth proportional to 143,136.99, 197,582.09 and 122,912.71 is: 169,665.08
Step by Step Solution
- Step 1: Write the proportion equation
143,136.99 : 197,582.09 = 122,912.71 : x - Step 2: Convert to fraction form
143,136.99/197,582.09 = 122,912.71/x - Step 3: Cross multiply
143,136.99x = 197,582.09 × 122,912.71 - Step 4: Simplify right side
143,136.99x = 24,285,349,020.85 - Step 5: Solve for x
x = 24,285,349,020.85/143,136.99 - Step 6: Final answer
x = 169,665.08
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1.5x scale
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.