Finding the Fourth Proportional to 110,913.43, 153,134.44 and 65,605.97
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Solution
The fourth proportional to 110,913.43, 153,134.44 and 65,605.97 is: 90,579.95
Step by Step Solution
- Step 1: Write the proportion equation
110,913.43 : 153,134.44 = 65,605.97 : x - Step 2: Convert to fraction form
110,913.43/153,134.44 = 65,605.97/x - Step 3: Cross multiply
110,913.43x = 153,134.44 × 65,605.97 - Step 4: Simplify right side
110,913.43x = 10,046,532,546.92 - Step 5: Solve for x
x = 10,046,532,546.92/110,913.43 - Step 6: Final answer
x = 90,579.95
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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.