Finding the Fourth Proportional to 138,520.22, 191,115.30 and 84,749.18
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Solution
The fourth proportional to 138,520.22, 191,115.30 and 84,749.18 is: 116,927.80
Step by Step Solution
- Step 1: Write the proportion equation
138,520.22 : 191,115.30 = 84,749.18 : x - Step 2: Convert to fraction form
138,520.22/191,115.30 = 84,749.18/x - Step 3: Cross multiply
138,520.22x = 191,115.30 × 84,749.18 - Step 4: Simplify right side
138,520.22x = 16,196,864,960.45 - Step 5: Solve for x
x = 16,196,864,960.45/138,520.22 - Step 6: Final answer
x = 116,927.80
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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.