Finding the Fourth Proportional to 135,891.44, 187,531.49 and 79,291.88
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Solution
The fourth proportional to 135,891.44, 187,531.49 and 79,291.88 is: 109,423.55
Step by Step Solution
- Step 1: Write the proportion equation
135,891.44 : 187,531.49 = 79,291.88 : x - Step 2: Convert to fraction form
135,891.44/187,531.49 = 79,291.88/x - Step 3: Cross multiply
135,891.44x = 187,531.49 × 79,291.88 - Step 4: Simplify right side
135,891.44x = 14,869,724,401.30 - Step 5: Solve for x
x = 14,869,724,401.30/135,891.44 - Step 6: Final answer
x = 109,423.55
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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.