Finding the Fourth Proportional to 127,854.81, 176,440.41 and 74,171.79
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Solution
The fourth proportional to 127,854.81, 176,440.41 and 74,171.79 is: 102,357.52
Step by Step Solution
- Step 1: Write the proportion equation
127,854.81 : 176,440.41 = 74,171.79 : x - Step 2: Convert to fraction form
127,854.81/176,440.41 = 74,171.79/x - Step 3: Cross multiply
127,854.81x = 176,440.41 × 74,171.79 - Step 4: Simplify right side
127,854.81x = 13,086,901,038.03 - Step 5: Solve for x
x = 13,086,901,038.03/127,854.81 - Step 6: Final answer
x = 102,357.52
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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.