Finding the Fourth Proportional to 122,451.84, 168,981.12 and 68,736.96
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Solution
The fourth proportional to 122,451.84, 168,981.12 and 68,736.96 is: 94,855.65
Step by Step Solution
- Step 1: Write the proportion equation
122,451.84 : 168,981.12 = 68,736.96 : x - Step 2: Convert to fraction form
122,451.84/168,981.12 = 68,736.96/x - Step 3: Cross multiply
122,451.84x = 168,981.12 × 68,736.96 - Step 4: Simplify right side
122,451.84x = 11,615,248,486.20 - Step 5: Solve for x
x = 11,615,248,486.20/122,451.84 - Step 6: Final answer
x = 94,855.65
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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.