Finding the Fourth Proportional to 128,532.24, 177,340.86 and 74,071.08
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Solution
The fourth proportional to 128,532.24, 177,340.86 and 74,071.08 is: 102,198.71
Step by Step Solution
- Step 1: Write the proportion equation
128,532.24 : 177,340.86 = 74,071.08 : x - Step 2: Convert to fraction form
128,532.24/177,340.86 = 74,071.08/x - Step 3: Cross multiply
128,532.24x = 177,340.86 × 74,071.08 - Step 4: Simplify right side
128,532.24x = 13,135,829,028.33 - Step 5: Solve for x
x = 13,135,829,028.33/128,532.24 - Step 6: Final answer
x = 102,198.71
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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.