Finding the Fourth Proportional to 98,165.76, 135,400.32 and 74,215.68
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Solution
The fourth proportional to 98,165.76, 135,400.32 and 74,215.68 is: 102,365.90
Step by Step Solution
- Step 1: Write the proportion equation
98,165.76 : 135,400.32 = 74,215.68 : x - Step 2: Convert to fraction form
98,165.76/135,400.32 = 74,215.68/x - Step 3: Cross multiply
98,165.76x = 135,400.32 × 74,215.68 - Step 4: Simplify right side
98,165.76x = 10,048,826,821.02 - Step 5: Solve for x
x = 10,048,826,821.02/98,165.76 - Step 6: Final answer
x = 102,365.90
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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.