Finding the Fourth Proportional to 115,291.54, 159,112.79 and 69,981.09
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Solution
The fourth proportional to 115,291.54, 159,112.79 and 69,981.09 is: 96,580.26
Step by Step Solution
- Step 1: Write the proportion equation
115,291.54 : 159,112.79 = 69,981.09 : x - Step 2: Convert to fraction form
115,291.54/159,112.79 = 69,981.09/x - Step 3: Cross multiply
115,291.54x = 159,112.79 × 69,981.09 - Step 4: Simplify right side
115,291.54x = 11,134,886,477.14 - Step 5: Solve for x
x = 11,134,886,477.14/115,291.54 - Step 6: Final answer
x = 96,580.26
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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.