Finding the Fourth Proportional to 84,745.90, 127,228.20 and 68,124.70
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Solution
The fourth proportional to 84,745.90, 127,228.20 and 68,124.70 is: 102,274.95
Step by Step Solution
- Step 1: Write the proportion equation
84,745.90 : 127,228.20 = 68,124.70 : x - Step 2: Convert to fraction form
84,745.90/127,228.20 = 68,124.70/x - Step 3: Cross multiply
84,745.90x = 127,228.20 × 68,124.70 - Step 4: Simplify right side
84,745.90x = 8,667,382,956.54 - Step 5: Solve for x
x = 8,667,382,956.54/84,745.90 - Step 6: Final answer
x = 102,274.95
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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.