Finding the Fourth Proportional to 126,475.80, 189,713.70 and 120,643.80
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Solution
The fourth proportional to 126,475.80, 189,713.70 and 120,643.80 is: 180,965.70
Step by Step Solution
- Step 1: Write the proportion equation
126,475.80 : 189,713.70 = 120,643.80 : x - Step 2: Convert to fraction form
126,475.80/189,713.70 = 120,643.80/x - Step 3: Cross multiply
126,475.80x = 189,713.70 × 120,643.80 - Step 4: Simplify right side
126,475.80x = 22,887,781,680.06 - Step 5: Solve for x
x = 22,887,781,680.06/126,475.80 - Step 6: Final answer
x = 180,965.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.