Finding the Fourth Proportional to 216,078.04, 324,151.62 and 91,420.12
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Solution
The fourth proportional to 216,078.04, 324,151.62 and 91,420.12 is: 137,144.80
Step by Step Solution
- Step 1: Write the proportion equation
216,078.04 : 324,151.62 = 91,420.12 : x - Step 2: Convert to fraction form
216,078.04/324,151.62 = 91,420.12/x - Step 3: Cross multiply
216,078.04x = 324,151.62 × 91,420.12 - Step 4: Simplify right side
216,078.04x = 29,633,979,998.59 - Step 5: Solve for x
x = 29,633,979,998.59/216,078.04 - Step 6: Final answer
x = 137,144.80
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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.