Finding the Fourth Proportional to 135,541.05, 187,047.08 and 75,112.68
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Solution
The fourth proportional to 135,541.05, 187,047.08 and 75,112.68 is: 103,655.74
Step by Step Solution
- Step 1: Write the proportion equation
135,541.05 : 187,047.08 = 75,112.68 : x - Step 2: Convert to fraction form
135,541.05/187,047.08 = 75,112.68/x - Step 3: Cross multiply
135,541.05x = 187,047.08 × 75,112.68 - Step 4: Simplify right side
135,541.05x = 14,049,607,464.97 - Step 5: Solve for x
x = 14,049,607,464.97/135,541.05 - Step 6: Final answer
x = 103,655.74
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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.