Finding the Fourth Proportional to 120,614.36, 180,896.08 and 77,791.52
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Solution
The fourth proportional to 120,614.36, 180,896.08 and 77,791.52 is: 116,670.86
Step by Step Solution
- Step 1: Write the proportion equation
120,614.36 : 180,896.08 = 77,791.52 : x - Step 2: Convert to fraction form
120,614.36/180,896.08 = 77,791.52/x - Step 3: Cross multiply
120,614.36x = 180,896.08 × 77,791.52 - Step 4: Simplify right side
120,614.36x = 14,072,181,025.24 - Step 5: Solve for x
x = 14,072,181,025.24/120,614.36 - Step 6: Final answer
x = 116,670.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.