Finding the Fourth Proportional to 107,037.84, 147,558.36 and 75,107.76
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Solution
The fourth proportional to 107,037.84, 147,558.36 and 75,107.76 is: 103,540.75
Step by Step Solution
- Step 1: Write the proportion equation
107,037.84 : 147,558.36 = 75,107.76 : x - Step 2: Convert to fraction form
107,037.84/147,558.36 = 75,107.76/x - Step 3: Cross multiply
107,037.84x = 147,558.36 × 75,107.76 - Step 4: Simplify right side
107,037.84x = 11,082,777,888.87 - Step 5: Solve for x
x = 11,082,777,888.87/107,037.84 - Step 6: Final answer
x = 103,540.75
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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.