Finding the Fourth Proportional to 122,238.99, 168,690.41 and 71,287.05
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Solution
The fourth proportional to 122,238.99, 168,690.41 and 71,287.05 is: 98,376.49
Step by Step Solution
- Step 1: Write the proportion equation
122,238.99 : 168,690.41 = 71,287.05 : x - Step 2: Convert to fraction form
122,238.99/168,690.41 = 71,287.05/x - Step 3: Cross multiply
122,238.99x = 168,690.41 × 71,287.05 - Step 4: Simplify right side
122,238.99x = 12,025,442,235.67 - Step 5: Solve for x
x = 12,025,442,235.67/122,238.99 - Step 6: Final answer
x = 98,376.49
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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.