Finding the Fourth Proportional to 109,148.68, 150,645.81 and 68,331.79
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Solution
The fourth proportional to 109,148.68, 150,645.81 and 68,331.79 is: 94,310.79
Step by Step Solution
- Step 1: Write the proportion equation
109,148.68 : 150,645.81 = 68,331.79 : x - Step 2: Convert to fraction form
109,148.68/150,645.81 = 68,331.79/x - Step 3: Cross multiply
109,148.68x = 150,645.81 × 68,331.79 - Step 4: Simplify right side
109,148.68x = 10,293,897,853.30 - Step 5: Solve for x
x = 10,293,897,853.30/109,148.68 - Step 6: Final answer
x = 94,310.79
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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.