Finding the Fourth Proportional to 103,805.73, 143,251.90 and 56,059.08
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Solution
The fourth proportional to 103,805.73, 143,251.90 and 56,059.08 is: 77,361.53
Step by Step Solution
- Step 1: Write the proportion equation
103,805.73 : 143,251.90 = 56,059.08 : x - Step 2: Convert to fraction form
103,805.73/143,251.90 = 56,059.08/x - Step 3: Cross multiply
103,805.73x = 143,251.90 × 56,059.08 - Step 4: Simplify right side
103,805.73x = 8,030,569,722.25 - Step 5: Solve for x
x = 8,030,569,722.25/103,805.73 - Step 6: Final answer
x = 77,361.53
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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.