Finding the Fourth Proportional to 128,004.90, 176,636.26 and 71,415.06
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Solution
The fourth proportional to 128,004.90, 176,636.26 and 71,415.06 is: 98,546.92
Step by Step Solution
- Step 1: Write the proportion equation
128,004.90 : 176,636.26 = 71,415.06 : x - Step 2: Convert to fraction form
128,004.90/176,636.26 = 71,415.06/x - Step 3: Cross multiply
128,004.90x = 176,636.26 × 71,415.06 - Step 4: Simplify right side
128,004.90x = 12,614,489,106.08 - Step 5: Solve for x
x = 12,614,489,106.08/128,004.90 - Step 6: Final answer
x = 98,546.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.