Finding the Fourth Proportional to 135,621.09, 187,163.06 and 75,187.94
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Solution
The fourth proportional to 135,621.09, 187,163.06 and 75,187.94 is: 103,762.65
Step by Step Solution
- Step 1: Write the proportion equation
135,621.09 : 187,163.06 = 75,187.94 : x - Step 2: Convert to fraction form
135,621.09/187,163.06 = 75,187.94/x - Step 3: Cross multiply
135,621.09x = 187,163.06 × 75,187.94 - Step 4: Simplify right side
135,621.09x = 14,072,403,613.74 - Step 5: Solve for x
x = 14,072,403,613.74/135,621.09 - Step 6: Final answer
x = 103,762.65
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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.