Finding the Fourth Proportional to 103,630.10, 155,560.35 and 64,231.70
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Solution
The fourth proportional to 103,630.10, 155,560.35 and 64,231.70 is: 96,418.95
Step by Step Solution
- Step 1: Write the proportion equation
103,630.10 : 155,560.35 = 64,231.70 : x - Step 2: Convert to fraction form
103,630.10/155,560.35 = 64,231.70/x - Step 3: Cross multiply
103,630.10x = 155,560.35 × 64,231.70 - Step 4: Simplify right side
103,630.10x = 9,991,905,733.10 - Step 5: Solve for x
x = 9,991,905,733.10/103,630.10 - Step 6: Final answer
x = 96,418.95
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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.