Finding the Fourth Proportional to 122,630.92, 169,230.50 and 71,678.68
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Solution
The fourth proportional to 122,630.92, 169,230.50 and 71,678.68 is: 98,916.48
Step by Step Solution
- Step 1: Write the proportion equation
122,630.92 : 169,230.50 = 71,678.68 : x - Step 2: Convert to fraction form
122,630.92/169,230.50 = 71,678.68/x - Step 3: Cross multiply
122,630.92x = 169,230.50 × 71,678.68 - Step 4: Simplify right side
122,630.92x = 12,130,218,855.74 - Step 5: Solve for x
x = 12,130,218,855.74/122,630.92 - Step 6: Final answer
x = 98,916.48
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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.