Finding the Fourth Proportional to 95,139.36, 131,239.44 and 74,921.76
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Solution
The fourth proportional to 95,139.36, 131,239.44 and 74,921.76 is: 103,350.39
Step by Step Solution
- Step 1: Write the proportion equation
95,139.36 : 131,239.44 = 74,921.76 : x - Step 2: Convert to fraction form
95,139.36/131,239.44 = 74,921.76/x - Step 3: Cross multiply
95,139.36x = 131,239.44 × 74,921.76 - Step 4: Simplify right side
95,139.36x = 9,832,689,826.21 - Step 5: Solve for x
x = 9,832,689,826.21/95,139.36 - Step 6: Final answer
x = 103,350.39
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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.