Finding the Fourth Proportional to 122,871.68, 169,573.20 and 68,431.04
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Solution
The fourth proportional to 122,871.68, 169,573.20 and 68,431.04 is: 94,440.56
Step by Step Solution
- Step 1: Write the proportion equation
122,871.68 : 169,573.20 = 68,431.04 : x - Step 2: Convert to fraction form
122,871.68/169,573.20 = 68,431.04/x - Step 3: Cross multiply
122,871.68x = 169,573.20 × 68,431.04 - Step 4: Simplify right side
122,871.68x = 11,604,070,432.13 - Step 5: Solve for x
x = 11,604,070,432.13/122,871.68 - Step 6: Final answer
x = 94,440.56
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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.