Finding the Fourth Proportional to 94,252.20, 141,378.30 and 81,421.80
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Solution
The fourth proportional to 94,252.20, 141,378.30 and 81,421.80 is: 122,132.70
Step by Step Solution
- Step 1: Write the proportion equation
94,252.20 : 141,378.30 = 81,421.80 : x - Step 2: Convert to fraction form
94,252.20/141,378.30 = 81,421.80/x - Step 3: Cross multiply
94,252.20x = 141,378.30 × 81,421.80 - Step 4: Simplify right side
94,252.20x = 11,511,275,666.94 - Step 5: Solve for x
x = 11,511,275,666.94/94,252.20 - Step 6: Final answer
x = 122,132.70
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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.