Finding the Fourth Proportional to 129,804.84, 179,126.66 and 73,215.40
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Solution
The fourth proportional to 129,804.84, 179,126.66 and 73,215.40 is: 101,034.99
Step by Step Solution
- Step 1: Write the proportion equation
129,804.84 : 179,126.66 = 73,215.40 : x - Step 2: Convert to fraction form
129,804.84/179,126.66 = 73,215.40/x - Step 3: Cross multiply
129,804.84x = 179,126.66 × 73,215.40 - Step 4: Simplify right side
129,804.84x = 13,114,830,062.56 - Step 5: Solve for x
x = 13,114,830,062.56/129,804.84 - Step 6: Final answer
x = 101,034.99
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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.