Finding the Fourth Proportional to 137,059.68, 189,149.58 and 83,335.80
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Solution
The fourth proportional to 137,059.68, 189,149.58 and 83,335.80 is: 115,007.79
Step by Step Solution
- Step 1: Write the proportion equation
137,059.68 : 189,149.58 = 83,335.80 : x - Step 2: Convert to fraction form
137,059.68/189,149.58 = 83,335.80/x - Step 3: Cross multiply
137,059.68x = 189,149.58 × 83,335.80 - Step 4: Simplify right side
137,059.68x = 15,762,931,568.96 - Step 5: Solve for x
x = 15,762,931,568.96/137,059.68 - Step 6: Final answer
x = 115,007.79
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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.