Finding the Fourth Proportional to 118,397.21, 163,391.36 and 70,678.26
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Solution
The fourth proportional to 118,397.21, 163,391.36 and 70,678.26 is: 97,537.92
Step by Step Solution
- Step 1: Write the proportion equation
118,397.21 : 163,391.36 = 70,678.26 : x - Step 2: Convert to fraction form
118,397.21/163,391.36 = 70,678.26/x - Step 3: Cross multiply
118,397.21x = 163,391.36 × 70,678.26 - Step 4: Simplify right side
118,397.21x = 11,548,216,670.44 - Step 5: Solve for x
x = 11,548,216,670.44/118,397.21 - Step 6: Final answer
x = 97,537.92
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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.