Finding the Fourth Proportional to 127,728.99, 176,432.45 and 103,619.57
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Solution
The fourth proportional to 127,728.99, 176,432.45 and 103,619.57 is: 143,130.02
Step by Step Solution
- Step 1: Write the proportion equation
127,728.99 : 176,432.45 = 103,619.57 : x - Step 2: Convert to fraction form
127,728.99/176,432.45 = 103,619.57/x - Step 3: Cross multiply
127,728.99x = 176,432.45 × 103,619.57 - Step 4: Simplify right side
127,728.99x = 18,281,853,202.79 - Step 5: Solve for x
x = 18,281,853,202.79/127,728.99 - Step 6: Final answer
x = 143,130.02
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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.