Finding the Fourth Proportional to 103,616.40, 154,668.12 and 88,919.76
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Solution
The fourth proportional to 103,616.40, 154,668.12 and 88,919.76 is: 132,730.46
Step by Step Solution
- Step 1: Write the proportion equation
103,616.40 : 154,668.12 = 88,919.76 : x - Step 2: Convert to fraction form
103,616.40/154,668.12 = 88,919.76/x - Step 3: Cross multiply
103,616.40x = 154,668.12 × 88,919.76 - Step 4: Simplify right side
103,616.40x = 13,753,052,110.05 - Step 5: Solve for x
x = 13,753,052,110.05/103,616.40 - Step 6: Final answer
x = 132,730.46
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.