Finding the Third Proportional to 129,166.13 and 189,921.75
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Solution
The third proportional to 129,166.13 and 189,921.75 is: 279,254.88
Step by Step Solution
- Step 1: Write the proportion equation
129,166.13 : 189,921.75 = 189,921.75 : x - Step 2: Convert to fraction form
129,166.13/189,921.75 = 189,921.75/x - Step 3: Cross multiply
129,166.13x = 189,921.75 × 189,921.75 - Step 4: Simplify right side
129,166.13x = 36,070,271,123.06 - Step 5: Solve for x
x = 36,070,271,123.06/129,166.13 - Step 6: Final answer
x = 279,254.88
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Why These Related Problems?
These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.