Finding the Fourth Proportional to 128,677.08, 177,584.21 and 74,239
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Solution
The fourth proportional to 128,677.08, 177,584.21 and 74,239 is: 102,455.50
Step by Step Solution
- Step 1: Write the proportion equation
128,677.08 : 177,584.21 = 74,239 : x - Step 2: Convert to fraction form
128,677.08/177,584.21 = 74,239/x - Step 3: Cross multiply
128,677.08x = 177,584.21 × 74,239 - Step 4: Simplify right side
128,677.08x = 13,183,674,166.19 - Step 5: Solve for x
x = 13,183,674,166.19/128,677.08 - Step 6: Final answer
x = 102,455.50
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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.