Finding the Fourth Proportional to 122,102.40, 168,496.32 and 68,386.56
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Solution
The fourth proportional to 122,102.40, 168,496.32 and 68,386.56 is: 94,370.66
Step by Step Solution
- Step 1: Write the proportion equation
122,102.40 : 168,496.32 = 68,386.56 : x - Step 2: Convert to fraction form
122,102.40/168,496.32 = 68,386.56/x - Step 3: Cross multiply
122,102.40x = 168,496.32 × 68,386.56 - Step 4: Simplify right side
122,102.40x = 11,522,883,697.46 - Step 5: Solve for x
x = 11,522,883,697.46/122,102.40 - Step 6: Final answer
x = 94,370.66
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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.