Finding the Fourth Proportional to 128,526.44, 177,367.38 and 74,842.76
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Solution
The fourth proportional to 128,526.44, 177,367.38 and 74,842.76 is: 103,283.53
Step by Step Solution
- Step 1: Write the proportion equation
128,526.44 : 177,367.38 = 74,842.76 : x - Step 2: Convert to fraction form
128,526.44/177,367.38 = 74,842.76/x - Step 3: Cross multiply
128,526.44x = 177,367.38 × 74,842.76 - Step 4: Simplify right side
128,526.44x = 13,274,664,253.17 - Step 5: Solve for x
x = 13,274,664,253.17/128,526.44 - Step 6: Final answer
x = 103,283.53
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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.