Finding the Fourth Proportional to 129,656.68, 178,936.74 and 73,071.88
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Solution
The fourth proportional to 129,656.68, 178,936.74 and 73,071.88 is: 100,845.12
Step by Step Solution
- Step 1: Write the proportion equation
129,656.68 : 178,936.74 = 73,071.88 : x - Step 2: Convert to fraction form
129,656.68/178,936.74 = 73,071.88/x - Step 3: Cross multiply
129,656.68x = 178,936.74 × 73,071.88 - Step 4: Simplify right side
129,656.68x = 13,075,243,992.87 - Step 5: Solve for x
x = 13,075,243,992.87/129,656.68 - Step 6: Final answer
x = 100,845.12
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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.