Finding the Fourth Proportional to 122,578.73, 169,172.35 and 74,207.31
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Solution
The fourth proportional to 122,578.73, 169,172.35 and 74,207.31 is: 102,414.38
Step by Step Solution
- Step 1: Write the proportion equation
122,578.73 : 169,172.35 = 74,207.31 : x - Step 2: Convert to fraction form
122,578.73/169,172.35 = 74,207.31/x - Step 3: Cross multiply
122,578.73x = 169,172.35 × 74,207.31 - Step 4: Simplify right side
122,578.73x = 12,553,824,648.84 - Step 5: Solve for x
x = 12,553,824,648.84/122,578.73 - Step 6: Final answer
x = 102,414.38
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1.5x scale
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.