Finding the Fourth Proportional to 129,855.88, 179,212.05 and 73,278.19
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Solution
The fourth proportional to 129,855.88, 179,212.05 and 73,278.19 is: 101,130.07
Step by Step Solution
- Step 1: Write the proportion equation
129,855.88 : 179,212.05 = 73,278.19 : x - Step 2: Convert to fraction form
129,855.88/179,212.05 = 73,278.19/x - Step 3: Cross multiply
129,855.88x = 179,212.05 × 73,278.19 - Step 4: Simplify right side
129,855.88x = 13,132,333,754.13 - Step 5: Solve for x
x = 13,132,333,754.13/129,855.88 - Step 6: Final answer
x = 101,130.07
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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.