Finding the Fourth Proportional to 171,491.10, 257,128.65 and 71,720.70
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Solution
The fourth proportional to 171,491.10, 257,128.65 and 71,720.70 is: 107,535.88
Step by Step Solution
- Step 1: Write the proportion equation
171,491.10 : 257,128.65 = 71,720.70 : x - Step 2: Convert to fraction form
171,491.10/257,128.65 = 71,720.70/x - Step 3: Cross multiply
171,491.10x = 257,128.65 × 71,720.70 - Step 4: Simplify right side
171,491.10x = 18,441,446,768.06 - Step 5: Solve for x
x = 18,441,446,768.06/171,491.10 - Step 6: Final answer
x = 107,535.88
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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.