Finding the Fourth Proportional to 235,568.70, 325,089.12 and 128,139.60
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Solution
The fourth proportional to 235,568.70, 325,089.12 and 128,139.60 is: 176,834.99
Step by Step Solution
- Step 1: Write the proportion equation
235,568.70 : 325,089.12 = 128,139.60 : x - Step 2: Convert to fraction form
235,568.70/325,089.12 = 128,139.60/x - Step 3: Cross multiply
235,568.70x = 325,089.12 × 128,139.60 - Step 4: Simplify right side
235,568.70x = 41,656,789,801.15 - Step 5: Solve for x
x = 41,656,789,801.15/235,568.70 - Step 6: Final answer
x = 176,834.99
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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.