Finding the Fourth Proportional to 118,814.24, 163,963.60 and 65,101.28
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Solution
The fourth proportional to 118,814.24, 163,963.60 and 65,101.28 is: 89,839.74
Step by Step Solution
- Step 1: Write the proportion equation
118,814.24 : 163,963.60 = 65,101.28 : x - Step 2: Convert to fraction form
118,814.24/163,963.60 = 65,101.28/x - Step 3: Cross multiply
118,814.24x = 163,963.60 × 65,101.28 - Step 4: Simplify right side
118,814.24x = 10,674,240,233.41 - Step 5: Solve for x
x = 10,674,240,233.41/118,814.24 - Step 6: Final answer
x = 89,839.74
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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.