Finding the Fourth Proportional to 118,245.09, 163,135.48 and 91,029.50
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Solution
The fourth proportional to 118,245.09, 163,135.48 and 91,029.50 is: 125,587.80
Step by Step Solution
- Step 1: Write the proportion equation
118,245.09 : 163,135.48 = 91,029.50 : x - Step 2: Convert to fraction form
118,245.09/163,135.48 = 91,029.50/x - Step 3: Cross multiply
118,245.09x = 163,135.48 × 91,029.50 - Step 4: Simplify right side
118,245.09x = 14,850,141,176.66 - Step 5: Solve for x
x = 14,850,141,176.66/118,245.09 - Step 6: Final answer
x = 125,587.80
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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.