Finding the Fourth Proportional to 121,129.77, 167,157.41 and 67,414.79
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Solution
The fourth proportional to 121,129.77, 167,157.41 and 67,414.79 is: 93,031.48
Step by Step Solution
- Step 1: Write the proportion equation
121,129.77 : 167,157.41 = 67,414.79 : x - Step 2: Convert to fraction form
121,129.77/167,157.41 = 67,414.79/x - Step 3: Cross multiply
121,129.77x = 167,157.41 × 67,414.79 - Step 4: Simplify right side
121,129.77x = 11,268,881,355.02 - Step 5: Solve for x
x = 11,268,881,355.02/121,129.77 - Step 6: Final answer
x = 93,031.48
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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.