Finding the Fourth Proportional to 112,948.76, 169,198.97 and 77,322.53
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Solution
The fourth proportional to 112,948.76, 169,198.97 and 77,322.53 is: 115,830.33
Step by Step Solution
- Step 1: Write the proportion equation
112,948.76 : 169,198.97 = 77,322.53 : x - Step 2: Convert to fraction form
112,948.76/169,198.97 = 77,322.53/x - Step 3: Cross multiply
112,948.76x = 169,198.97 × 77,322.53 - Step 4: Simplify right side
112,948.76x = 13,082,891,201.19 - Step 5: Solve for x
x = 13,082,891,201.19/112,948.76 - Step 6: Final answer
x = 115,830.33
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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.