Finding the Fourth Proportional to 158,938.31, 219,338.87 and 87,324.99
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Solution
The fourth proportional to 158,938.31, 219,338.87 and 87,324.99 is: 120,510.69
Step by Step Solution
- Step 1: Write the proportion equation
158,938.31 : 219,338.87 = 87,324.99 : x - Step 2: Convert to fraction form
158,938.31/219,338.87 = 87,324.99/x - Step 3: Cross multiply
158,938.31x = 219,338.87 × 87,324.99 - Step 4: Simplify right side
158,938.31x = 19,153,764,629.36 - Step 5: Solve for x
x = 19,153,764,629.36/158,938.31 - Step 6: Final answer
x = 120,510.69
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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.