Finding the Fourth Proportional to 128,508.24, 177,421.88 and 82,586.48
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Solution
The fourth proportional to 128,508.24, 177,421.88 and 82,586.48 is: 114,021.08
Step by Step Solution
- Step 1: Write the proportion equation
128,508.24 : 177,421.88 = 82,586.48 : x - Step 2: Convert to fraction form
128,508.24/177,421.88 = 82,586.48/x - Step 3: Cross multiply
128,508.24x = 177,421.88 × 82,586.48 - Step 4: Simplify right side
128,508.24x = 14,652,648,544.18 - Step 5: Solve for x
x = 14,652,648,544.18/128,508.24 - Step 6: Final answer
x = 114,021.08
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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.