Finding the Fourth Proportional to 122,020.76, 168,391.50 and 68,304.44
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Solution
The fourth proportional to 122,020.76, 168,391.50 and 68,304.44 is: 94,261.72
Step by Step Solution
- Step 1: Write the proportion equation
122,020.76 : 168,391.50 = 68,304.44 : x - Step 2: Convert to fraction form
122,020.76/168,391.50 = 68,304.44/x - Step 3: Cross multiply
122,020.76x = 168,391.50 × 68,304.44 - Step 4: Simplify right side
122,020.76x = 11,501,887,108.26 - Step 5: Solve for x
x = 11,501,887,108.26/122,020.76 - Step 6: Final answer
x = 94,261.72
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1.5x scale
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.