Finding the Fourth Proportional to 154,252.80, 212,864.76 and 87,184.80
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Solution
The fourth proportional to 154,252.80, 212,864.76 and 87,184.80 is: 120,312.70
Step by Step Solution
- Step 1: Write the proportion equation
154,252.80 : 212,864.76 = 87,184.80 : x - Step 2: Convert to fraction form
154,252.80/212,864.76 = 87,184.80/x - Step 3: Cross multiply
154,252.80x = 212,864.76 × 87,184.80 - Step 4: Simplify right side
154,252.80x = 18,558,571,527.65 - Step 5: Solve for x
x = 18,558,571,527.65/154,252.80 - Step 6: Final answer
x = 120,312.70
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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.