Finding the Fourth Proportional to 129,707.07, 178,998.51 and 73,118.43
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Solution
The fourth proportional to 129,707.07, 178,998.51 and 73,118.43 is: 100,904.99
Step by Step Solution
- Step 1: Write the proportion equation
129,707.07 : 178,998.51 = 73,118.43 : x - Step 2: Convert to fraction form
129,707.07/178,998.51 = 73,118.43/x - Step 3: Cross multiply
129,707.07x = 178,998.51 × 73,118.43 - Step 4: Simplify right side
129,707.07x = 13,088,090,023.54 - Step 5: Solve for x
x = 13,088,090,023.54/129,707.07 - Step 6: Final answer
x = 100,904.99
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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.