Finding the Fourth Proportional to 128,487.74, 177,393.48 and 82,565.97
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Solution
The fourth proportional to 128,487.74, 177,393.48 and 82,565.97 is: 113,992.70
Step by Step Solution
- Step 1: Write the proportion equation
128,487.74 : 177,393.48 = 82,565.97 : x - Step 2: Convert to fraction form
128,487.74/177,393.48 = 82,565.97/x - Step 3: Cross multiply
128,487.74x = 177,393.48 × 82,565.97 - Step 4: Simplify right side
128,487.74x = 14,646,663,773.03 - Step 5: Solve for x
x = 14,646,663,773.03/128,487.74 - Step 6: Final answer
x = 113,992.70
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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.