Finding the Fourth Proportional to 125,615.12, 188,316.74 and 54,484.19
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Solution
The fourth proportional to 125,615.12, 188,316.74 and 54,484.19 is: 81,680.34
Step by Step Solution
- Step 1: Write the proportion equation
125,615.12 : 188,316.74 = 54,484.19 : x - Step 2: Convert to fraction form
125,615.12/188,316.74 = 54,484.19/x - Step 3: Cross multiply
125,615.12x = 188,316.74 × 54,484.19 - Step 4: Simplify right side
125,615.12x = 10,260,284,943.16 - Step 5: Solve for x
x = 10,260,284,943.16/125,615.12 - Step 6: Final answer
x = 81,680.34
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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.