Finding the Fourth Proportional to 129,605.39, 193,969.16 and 79,717.08
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Solution
The fourth proportional to 129,605.39, 193,969.16 and 79,717.08 is: 119,305.65
Step by Step Solution
- Step 1: Write the proportion equation
129,605.39 : 193,969.16 = 79,717.08 : x - Step 2: Convert to fraction form
129,605.39/193,969.16 = 79,717.08/x - Step 3: Cross multiply
129,605.39x = 193,969.16 × 79,717.08 - Step 4: Simplify right side
129,605.39x = 15,462,655,045.25 - Step 5: Solve for x
x = 15,462,655,045.25/129,605.39 - Step 6: Final answer
x = 119,305.65
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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.