Finding the Fourth Proportional to 86,912.80, 130,174.80 and 75,248.80
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Solution
The fourth proportional to 86,912.80, 130,174.80 and 75,248.80 is: 112,704.89
Step by Step Solution
- Step 1: Write the proportion equation
86,912.80 : 130,174.80 = 75,248.80 : x - Step 2: Convert to fraction form
86,912.80/130,174.80 = 75,248.80/x - Step 3: Cross multiply
86,912.80x = 130,174.80 × 75,248.80 - Step 4: Simplify right side
86,912.80x = 9,795,497,490.24 - Step 5: Solve for x
x = 9,795,497,490.24/86,912.80 - Step 6: Final answer
x = 112,704.89
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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.