Finding the Fourth Proportional to 128,748.46, 177,670.50 and 74,300.26
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Solution
The fourth proportional to 128,748.46, 177,670.50 and 74,300.26 is: 102,532.99
Step by Step Solution
- Step 1: Write the proportion equation
128,748.46 : 177,670.50 = 74,300.26 : x - Step 2: Convert to fraction form
128,748.46/177,670.50 = 74,300.26/x - Step 3: Cross multiply
128,748.46x = 177,670.50 × 74,300.26 - Step 4: Simplify right side
128,748.46x = 13,200,964,344.33 - Step 5: Solve for x
x = 13,200,964,344.33/128,748.46 - Step 6: Final answer
x = 102,532.99
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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.