Finding the Fourth Proportional to 128,836.04, 177,759.96 and 74,374.88
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Solution
The fourth proportional to 128,836.04, 177,759.96 and 74,374.88 is: 102,617.84
Step by Step Solution
- Step 1: Write the proportion equation
128,836.04 : 177,759.96 = 74,374.88 : x - Step 2: Convert to fraction form
128,836.04/177,759.96 = 74,374.88/x - Step 3: Cross multiply
128,836.04x = 177,759.96 × 74,374.88 - Step 4: Simplify right side
128,836.04x = 13,220,875,693.80 - Step 5: Solve for x
x = 13,220,875,693.80/128,836.04 - Step 6: Final answer
x = 102,617.84
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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.