Finding the Fourth Proportional to 129,718.44, 193,288.08 and 115,569.75
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Solution
The fourth proportional to 129,718.44, 193,288.08 and 115,569.75 is: 172,205.70
Step by Step Solution
- Step 1: Write the proportion equation
129,718.44 : 193,288.08 = 115,569.75 : x - Step 2: Convert to fraction form
129,718.44/193,288.08 = 115,569.75/x - Step 3: Cross multiply
129,718.44x = 193,288.08 × 115,569.75 - Step 4: Simplify right side
129,718.44x = 22,338,255,083.58 - Step 5: Solve for x
x = 22,338,255,083.58/129,718.44 - Step 6: Final answer
x = 172,205.70
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.