Finding the Fourth Proportional to 118,187.28, 163,126.44 and 67,915.44
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Solution
The fourth proportional to 118,187.28, 163,126.44 and 67,915.44 is: 93,739.39
Step by Step Solution
- Step 1: Write the proportion equation
118,187.28 : 163,126.44 = 67,915.44 : x - Step 2: Convert to fraction form
118,187.28/163,126.44 = 67,915.44/x - Step 3: Cross multiply
118,187.28x = 163,126.44 × 67,915.44 - Step 4: Simplify right side
118,187.28x = 11,078,803,948.23 - Step 5: Solve for x
x = 11,078,803,948.23/118,187.28 - Step 6: Final answer
x = 93,739.39
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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.