Finding the Fourth Proportional to 135,423.98, 203,213.75 and 105,758.54
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Solution
The fourth proportional to 135,423.98, 203,213.75 and 105,758.54 is: 158,698.55
Step by Step Solution
- Step 1: Write the proportion equation
135,423.98 : 203,213.75 = 105,758.54 : x - Step 2: Convert to fraction form
135,423.98/203,213.75 = 105,758.54/x - Step 3: Cross multiply
135,423.98x = 203,213.75 × 105,758.54 - Step 4: Simplify right side
135,423.98x = 21,491,588,756.25 - Step 5: Solve for x
x = 21,491,588,756.25/135,423.98 - Step 6: Final answer
x = 158,698.55
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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.