Finding the Fourth Proportional to 168,128.09, 252,252.36 and 72,024.99
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Solution
The fourth proportional to 168,128.09, 252,252.36 and 72,024.99 is: 108,063.29
Step by Step Solution
- Step 1: Write the proportion equation
168,128.09 : 252,252.36 = 72,024.99 : x - Step 2: Convert to fraction form
168,128.09/252,252.36 = 72,024.99/x - Step 3: Cross multiply
168,128.09x = 252,252.36 × 72,024.99 - Step 4: Simplify right side
168,128.09x = 18,168,473,706.48 - Step 5: Solve for x
x = 18,168,473,706.48/168,128.09 - Step 6: Final answer
x = 108,063.29
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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.