Finding the Fourth Proportional to 90,234.70, 135,352.05 and 84,329.80
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Solution
The fourth proportional to 90,234.70, 135,352.05 and 84,329.80 is: 126,494.70
Step by Step Solution
- Step 1: Write the proportion equation
90,234.70 : 135,352.05 = 84,329.80 : x - Step 2: Convert to fraction form
90,234.70/135,352.05 = 84,329.80/x - Step 3: Cross multiply
90,234.70x = 135,352.05 × 84,329.80 - Step 4: Simplify right side
90,234.70x = 11,414,211,306.09 - Step 5: Solve for x
x = 11,414,211,306.09/90,234.70 - Step 6: Final answer
x = 126,494.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.