Finding the Fourth Proportional to 137,733.12, 189,475.20 and 120,660.48
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Solution
The fourth proportional to 137,733.12, 189,475.20 and 120,660.48 is: 165,988.90
Step by Step Solution
- Step 1: Write the proportion equation
137,733.12 : 189,475.20 = 120,660.48 : x - Step 2: Convert to fraction form
137,733.12/189,475.20 = 120,660.48/x - Step 3: Cross multiply
137,733.12x = 189,475.20 × 120,660.48 - Step 4: Simplify right side
137,733.12x = 22,862,168,580.10 - Step 5: Solve for x
x = 22,862,168,580.10/137,733.12 - Step 6: Final answer
x = 165,988.90
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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.