Finding the Fourth Proportional to 122,638.06, 169,254.55 and 68,195.66
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Solution
The fourth proportional to 122,638.06, 169,254.55 and 68,195.66 is: 94,117.80
Step by Step Solution
- Step 1: Write the proportion equation
122,638.06 : 169,254.55 = 68,195.66 : x - Step 2: Convert to fraction form
122,638.06/169,254.55 = 68,195.66/x - Step 3: Cross multiply
122,638.06x = 169,254.55 × 68,195.66 - Step 4: Simplify right side
122,638.06x = 11,542,424,600.62 - Step 5: Solve for x
x = 11,542,424,600.62/122,638.06 - Step 6: Final answer
x = 94,117.80
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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.