Finding the Fourth Proportional to 120,987.48, 181,418.76 and 54,370.68
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Solution
The fourth proportional to 120,987.48, 181,418.76 and 54,370.68 is: 81,527.95
Step by Step Solution
- Step 1: Write the proportion equation
120,987.48 : 181,418.76 = 54,370.68 : x - Step 2: Convert to fraction form
120,987.48/181,418.76 = 54,370.68/x - Step 3: Cross multiply
120,987.48x = 181,418.76 × 54,370.68 - Step 4: Simplify right side
120,987.48x = 9,863,861,345.96 - Step 5: Solve for x
x = 9,863,861,345.96/120,987.48 - Step 6: Final answer
x = 81,527.95
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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.