Finding the Fourth Proportional to 145,343.36, 217,765.92 and 115,449.81
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Solution
The fourth proportional to 145,343.36, 217,765.92 and 115,449.81 is: 172,976.82
Step by Step Solution
- Step 1: Write the proportion equation
145,343.36 : 217,765.92 = 115,449.81 : x - Step 2: Convert to fraction form
145,343.36/217,765.92 = 115,449.81/x - Step 3: Cross multiply
145,343.36x = 217,765.92 × 115,449.81 - Step 4: Simplify right side
145,343.36x = 25,141,033,055.38 - Step 5: Solve for x
x = 25,141,033,055.38/145,343.36 - Step 6: Final answer
x = 172,976.82
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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.