Finding the Fourth Proportional to 159,661.20, 220,347.20 and 91,687.08
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Solution
The fourth proportional to 159,661.20, 220,347.20 and 91,687.08 is: 126,536.64
Step by Step Solution
- Step 1: Write the proportion equation
159,661.20 : 220,347.20 = 91,687.08 : x - Step 2: Convert to fraction form
159,661.20/220,347.20 = 91,687.08/x - Step 3: Cross multiply
159,661.20x = 220,347.20 × 91,687.08 - Step 4: Simplify right side
159,661.20x = 20,202,991,354.18 - Step 5: Solve for x
x = 20,202,991,354.18/159,661.20 - Step 6: Final answer
x = 126,536.64
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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.