Finding the Fourth Proportional to 133,115.12, 199,532.76 and 53,121.68
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Solution
The fourth proportional to 133,115.12, 199,532.76 and 53,121.68 is: 79,626.68
Step by Step Solution
- Step 1: Write the proportion equation
133,115.12 : 199,532.76 = 53,121.68 : x - Step 2: Convert to fraction form
133,115.12/199,532.76 = 53,121.68/x - Step 3: Cross multiply
133,115.12x = 199,532.76 × 53,121.68 - Step 4: Simplify right side
133,115.12x = 10,599,515,426.24 - Step 5: Solve for x
x = 10,599,515,426.24/133,115.12 - Step 6: Final answer
x = 79,626.68
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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.