Finding the Fourth Proportional to 205,187.79, 283,151.70 and 128,748.09
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Solution
The fourth proportional to 205,187.79, 283,151.70 and 128,748.09 is: 177,667.69
Step by Step Solution
- Step 1: Write the proportion equation
205,187.79 : 283,151.70 = 128,748.09 : x - Step 2: Convert to fraction form
205,187.79/283,151.70 = 128,748.09/x - Step 3: Cross multiply
205,187.79x = 283,151.70 × 128,748.09 - Step 4: Simplify right side
205,187.79x = 36,455,240,555.25 - Step 5: Solve for x
x = 36,455,240,555.25/205,187.79 - Step 6: Final answer
x = 177,667.69
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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.