Finding the Fourth Proportional to 122,455.32, 168,988.26 and 68,740.44
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Solution
The fourth proportional to 122,455.32, 168,988.26 and 68,740.44 is: 94,861.76
Step by Step Solution
- Step 1: Write the proportion equation
122,455.32 : 168,988.26 = 68,740.44 : x - Step 2: Convert to fraction form
122,455.32/168,988.26 = 68,740.44/x - Step 3: Cross multiply
122,455.32x = 168,988.26 × 68,740.44 - Step 4: Simplify right side
122,455.32x = 11,616,327,347.23 - Step 5: Solve for x
x = 11,616,327,347.23/122,455.32 - Step 6: Final answer
x = 94,861.76
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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.