Finding the Fourth Proportional to 129,988.11, 179,383.68 and 75,550.94
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Solution
The fourth proportional to 129,988.11, 179,383.68 and 75,550.94 is: 104,260.35
Step by Step Solution
- Step 1: Write the proportion equation
129,988.11 : 179,383.68 = 75,550.94 : x - Step 2: Convert to fraction form
129,988.11/179,383.68 = 75,550.94/x - Step 3: Cross multiply
129,988.11x = 179,383.68 × 75,550.94 - Step 4: Simplify right side
129,988.11x = 13,552,605,904.24 - Step 5: Solve for x
x = 13,552,605,904.24/129,988.11 - Step 6: Final answer
x = 104,260.35
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1.5x scale
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.