Finding the Fourth Proportional to 122,647.80, 183,971.70 and 38,414.55
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Solution
The fourth proportional to 122,647.80, 183,971.70 and 38,414.55 is: 57,621.83
Step by Step Solution
- Step 1: Write the proportion equation
122,647.80 : 183,971.70 = 38,414.55 : x - Step 2: Convert to fraction form
122,647.80/183,971.70 = 38,414.55/x - Step 3: Cross multiply
122,647.80x = 183,971.70 × 38,414.55 - Step 4: Simplify right side
122,647.80x = 7,067,190,068.24 - Step 5: Solve for x
x = 7,067,190,068.24/122,647.80 - Step 6: Final answer
x = 57,621.83
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1.5x scale
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.