Finding the Fourth Proportional to 122,921.20, 184,138.80 and 108,308.80
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Solution
The fourth proportional to 122,921.20, 184,138.80 and 108,308.80 is: 162,249.09
Step by Step Solution
- Step 1: Write the proportion equation
122,921.20 : 184,138.80 = 108,308.80 : x - Step 2: Convert to fraction form
122,921.20/184,138.80 = 108,308.80/x - Step 3: Cross multiply
122,921.20x = 184,138.80 × 108,308.80 - Step 4: Simplify right side
122,921.20x = 19,943,852,461.44 - Step 5: Solve for x
x = 19,943,852,461.44/122,921.20 - Step 6: Final answer
x = 162,249.09
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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.