Finding the Fourth Proportional to 129,569.04, 178,744.18 and 75,821.09
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Solution
The fourth proportional to 129,569.04, 178,744.18 and 75,821.09 is: 104,597.35
Step by Step Solution
- Step 1: Write the proportion equation
129,569.04 : 178,744.18 = 75,821.09 : x - Step 2: Convert to fraction form
129,569.04/178,744.18 = 75,821.09/x - Step 3: Cross multiply
129,569.04x = 178,744.18 × 75,821.09 - Step 4: Simplify right side
129,569.04x = 13,552,578,558.76 - Step 5: Solve for x
x = 13,552,578,558.76/129,569.04 - Step 6: Final answer
x = 104,597.35
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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.