Finding the Fourth Proportional to 129,470.10, 178,620.36 and 129,270.49
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Solution
The fourth proportional to 129,470.10, 178,620.36 and 129,270.49 is: 178,344.96
Step by Step Solution
- Step 1: Write the proportion equation
129,470.10 : 178,620.36 = 129,270.49 : x - Step 2: Convert to fraction form
129,470.10/178,620.36 = 129,270.49/x - Step 3: Cross multiply
129,470.10x = 178,620.36 × 129,270.49 - Step 4: Simplify right side
129,470.10x = 23,090,340,368.27 - Step 5: Solve for x
x = 23,090,340,368.27/129,470.10 - Step 6: Final answer
x = 178,344.96
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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.