Finding the Fourth Proportional to 128,565.16, 177,360.99 and 83,257.75
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Solution
The fourth proportional to 128,565.16, 177,360.99 and 83,257.75 is: 114,857.53
Step by Step Solution
- Step 1: Write the proportion equation
128,565.16 : 177,360.99 = 83,257.75 : x - Step 2: Convert to fraction form
128,565.16/177,360.99 = 83,257.75/x - Step 3: Cross multiply
128,565.16x = 177,360.99 × 83,257.75 - Step 4: Simplify right side
128,565.16x = 14,766,676,965.17 - Step 5: Solve for x
x = 14,766,676,965.17/128,565.16 - Step 6: Final answer
x = 114,857.53
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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.