Finding the Fourth Proportional to 128,510.44, 177,357.66 and 74,064.52
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Solution
The fourth proportional to 128,510.44, 177,357.66 and 74,064.52 is: 102,216.68
Step by Step Solution
- Step 1: Write the proportion equation
128,510.44 : 177,357.66 = 74,064.52 : x - Step 2: Convert to fraction form
128,510.44/177,357.66 = 74,064.52/x - Step 3: Cross multiply
128,510.44x = 177,357.66 × 74,064.52 - Step 4: Simplify right side
128,510.44x = 13,135,909,956.22 - Step 5: Solve for x
x = 13,135,909,956.22/128,510.44 - Step 6: Final answer
x = 102,216.68
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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.