Finding the Fourth Proportional to 128,064.24, 176,738.76 and 74,366.10
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Solution
The fourth proportional to 128,064.24, 176,738.76 and 74,366.10 is: 102,631.09
Step by Step Solution
- Step 1: Write the proportion equation
128,064.24 : 176,738.76 = 74,366.10 : x - Step 2: Convert to fraction form
128,064.24/176,738.76 = 74,366.10/x - Step 3: Cross multiply
128,064.24x = 176,738.76 × 74,366.10 - Step 4: Simplify right side
128,064.24x = 13,143,372,300.04 - Step 5: Solve for x
x = 13,143,372,300.04/128,064.24 - Step 6: Final answer
x = 102,631.09
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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.