Finding the Fourth Proportional to 122,893.48, 169,531.14 and 71,872.84
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Solution
The fourth proportional to 122,893.48, 169,531.14 and 71,872.84 is: 99,148.34
Step by Step Solution
- Step 1: Write the proportion equation
122,893.48 : 169,531.14 = 71,872.84 : x - Step 2: Convert to fraction form
122,893.48/169,531.14 = 71,872.84/x - Step 3: Cross multiply
122,893.48x = 169,531.14 × 71,872.84 - Step 4: Simplify right side
122,893.48x = 12,184,684,500.24 - Step 5: Solve for x
x = 12,184,684,500.24/122,893.48 - Step 6: Final answer
x = 99,148.34
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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.