Finding the Fourth Proportional to 103,630.75, 143,010.44 and 58,918.75
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Solution
The fourth proportional to 103,630.75, 143,010.44 and 58,918.75 is: 81,307.88
Step by Step Solution
- Step 1: Write the proportion equation
103,630.75 : 143,010.44 = 58,918.75 : x - Step 2: Convert to fraction form
103,630.75/143,010.44 = 58,918.75/x - Step 3: Cross multiply
103,630.75x = 143,010.44 × 58,918.75 - Step 4: Simplify right side
103,630.75x = 8,425,996,361.75 - Step 5: Solve for x
x = 8,425,996,361.75/103,630.75 - Step 6: Final answer
x = 81,307.88
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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.