Finding the Fourth Proportional to 123,321.11, 170,197.47 and 102,587.99
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Solution
The fourth proportional to 123,321.11, 170,197.47 and 102,587.99 is: 141,583.35
Step by Step Solution
- Step 1: Write the proportion equation
123,321.11 : 170,197.47 = 102,587.99 : x - Step 2: Convert to fraction form
123,321.11/170,197.47 = 102,587.99/x - Step 3: Cross multiply
123,321.11x = 170,197.47 × 102,587.99 - Step 4: Simplify right side
123,321.11x = 17,460,215,499.40 - Step 5: Solve for x
x = 17,460,215,499.40/123,321.11 - Step 6: Final answer
x = 141,583.35
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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.