Finding the Fourth Proportional to 127,890.81, 176,490.09 and 74,207.79
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Solution
The fourth proportional to 127,890.81, 176,490.09 and 74,207.79 is: 102,407.20
Step by Step Solution
- Step 1: Write the proportion equation
127,890.81 : 176,490.09 = 74,207.79 : x - Step 2: Convert to fraction form
127,890.81/176,490.09 = 74,207.79/x - Step 3: Cross multiply
127,890.81x = 176,490.09 × 74,207.79 - Step 4: Simplify right side
127,890.81x = 13,096,939,535.80 - Step 5: Solve for x
x = 13,096,939,535.80/127,890.81 - Step 6: Final answer
x = 102,407.20
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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.