Finding the Fourth Proportional to 154,148.70, 212,708.08 and 87,080.70
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Solution
The fourth proportional to 154,148.70, 212,708.08 and 87,080.70 is: 120,161.69
Step by Step Solution
- Step 1: Write the proportion equation
154,148.70 : 212,708.08 = 87,080.70 : x - Step 2: Convert to fraction form
154,148.70/212,708.08 = 87,080.70/x - Step 3: Cross multiply
154,148.70x = 212,708.08 × 87,080.70 - Step 4: Simplify right side
154,148.70x = 18,522,768,502.06 - Step 5: Solve for x
x = 18,522,768,502.06/154,148.70 - Step 6: Final answer
x = 120,161.69
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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.