Finding the Fourth Proportional to 122,915.80, 184,373.70 and 39,809.80
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Solution
The fourth proportional to 122,915.80, 184,373.70 and 39,809.80 is: 59,714.70
Step by Step Solution
- Step 1: Write the proportion equation
122,915.80 : 184,373.70 = 39,809.80 : x - Step 2: Convert to fraction form
122,915.80/184,373.70 = 39,809.80/x - Step 3: Cross multiply
122,915.80x = 184,373.70 × 39,809.80 - Step 4: Simplify right side
122,915.80x = 7,339,880,122.26 - Step 5: Solve for x
x = 7,339,880,122.26/122,915.80 - Step 6: Final answer
x = 59,714.70
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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.