Finding the Fourth Proportional to 122,119.92, 168,531.84 and 68,401.80
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Solution
The fourth proportional to 122,119.92, 168,531.84 and 68,401.80 is: 94,398.04
Step by Step Solution
- Step 1: Write the proportion equation
122,119.92 : 168,531.84 = 68,401.80 : x - Step 2: Convert to fraction form
122,119.92/168,531.84 = 68,401.80/x - Step 3: Cross multiply
122,119.92x = 168,531.84 × 68,401.80 - Step 4: Simplify right side
122,119.92x = 11,527,881,213.31 - Step 5: Solve for x
x = 11,527,881,213.31/122,119.92 - Step 6: Final answer
x = 94,398.04
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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.