Finding the Fourth Proportional to 235,551.75, 325,068.09 and 128,128.65
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Solution
The fourth proportional to 235,551.75, 325,068.09 and 128,128.65 is: 176,821.17
Step by Step Solution
- Step 1: Write the proportion equation
235,551.75 : 325,068.09 = 128,128.65 : x - Step 2: Convert to fraction form
235,551.75/325,068.09 = 128,128.65/x - Step 3: Cross multiply
235,551.75x = 325,068.09 × 128,128.65 - Step 4: Simplify right side
235,551.75x = 41,650,535,529.78 - Step 5: Solve for x
x = 41,650,535,529.78/235,551.75 - Step 6: Final answer
x = 176,821.17
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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.