Finding the Fourth Proportional to 102,938.96, 154,414.56 and 39,759.56
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Solution
The fourth proportional to 102,938.96, 154,414.56 and 39,759.56 is: 59,641.70
Step by Step Solution
- Step 1: Write the proportion equation
102,938.96 : 154,414.56 = 39,759.56 : x - Step 2: Convert to fraction form
102,938.96/154,414.56 = 39,759.56/x - Step 3: Cross multiply
102,938.96x = 154,414.56 × 39,759.56 - Step 4: Simplify right side
102,938.96x = 6,139,454,963.19 - Step 5: Solve for x
x = 6,139,454,963.19/102,938.96 - Step 6: Final answer
x = 59,641.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.