Finding the Fourth Proportional to 128,027.50, 176,761.16 and 114,575.62
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Solution
The fourth proportional to 128,027.50, 176,761.16 and 114,575.62 is: 158,188.82
Step by Step Solution
- Step 1: Write the proportion equation
128,027.50 : 176,761.16 = 114,575.62 : x - Step 2: Convert to fraction form
128,027.50/176,761.16 = 114,575.62/x - Step 3: Cross multiply
128,027.50x = 176,761.16 × 114,575.62 - Step 4: Simplify right side
128,027.50x = 20,252,519,498.92 - Step 5: Solve for x
x = 20,252,519,498.92/128,027.50 - Step 6: Final answer
x = 158,188.82
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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.