Finding the Fourth Proportional to 122,787.68, 169,446.74 and 69,072.70
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Solution
The fourth proportional to 122,787.68, 169,446.74 and 69,072.70 is: 95,320.17
Step by Step Solution
- Step 1: Write the proportion equation
122,787.68 : 169,446.74 = 69,072.70 : x - Step 2: Convert to fraction form
122,787.68/169,446.74 = 69,072.70/x - Step 3: Cross multiply
122,787.68x = 169,446.74 × 69,072.70 - Step 4: Simplify right side
122,787.68x = 11,704,143,069.02 - Step 5: Solve for x
x = 11,704,143,069.02/122,787.68 - Step 6: Final answer
x = 95,320.17
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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.