Finding the Fourth Proportional to 122,691.04, 169,319.64 and 68,992.96
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Solution
The fourth proportional to 122,691.04, 169,319.64 and 68,992.96 is: 95,213.66
Step by Step Solution
- Step 1: Write the proportion equation
122,691.04 : 169,319.64 = 68,992.96 : x - Step 2: Convert to fraction form
122,691.04/169,319.64 = 68,992.96/x - Step 3: Cross multiply
122,691.04x = 169,319.64 × 68,992.96 - Step 4: Simplify right side
122,691.04x = 11,681,863,149.73 - Step 5: Solve for x
x = 11,681,863,149.73/122,691.04 - Step 6: Final answer
x = 95,213.66
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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.