Finding the Fourth Proportional to 122,405.40, 183,608.10 and 39,307.80
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Solution
The fourth proportional to 122,405.40, 183,608.10 and 39,307.80 is: 58,961.70
Step by Step Solution
- Step 1: Write the proportion equation
122,405.40 : 183,608.10 = 39,307.80 : x - Step 2: Convert to fraction form
122,405.40/183,608.10 = 39,307.80/x - Step 3: Cross multiply
122,405.40x = 183,608.10 × 39,307.80 - Step 4: Simplify right side
122,405.40x = 7,217,230,473.18 - Step 5: Solve for x
x = 7,217,230,473.18/122,405.40 - Step 6: Final answer
x = 58,961.70
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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.