Finding the Fourth Proportional to 121,260.20, 181,890.30 and 91,735.70
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Solution
The fourth proportional to 121,260.20, 181,890.30 and 91,735.70 is: 137,603.55
Step by Step Solution
- Step 1: Write the proportion equation
121,260.20 : 181,890.30 = 91,735.70 : x - Step 2: Convert to fraction form
121,260.20/181,890.30 = 91,735.70/x - Step 3: Cross multiply
121,260.20x = 181,890.30 × 91,735.70 - Step 4: Simplify right side
121,260.20x = 16,685,833,993.71 - Step 5: Solve for x
x = 16,685,833,993.71/121,260.20 - Step 6: Final answer
x = 137,603.55
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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.