Finding the Fourth Proportional to 165,000.80, 247,371.60 and 91,128.80
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Solution
The fourth proportional to 165,000.80, 247,371.60 and 91,128.80 is: 136,621.62
Step by Step Solution
- Step 1: Write the proportion equation
165,000.80 : 247,371.60 = 91,128.80 : x - Step 2: Convert to fraction form
165,000.80/247,371.60 = 91,128.80/x - Step 3: Cross multiply
165,000.80x = 247,371.60 × 91,128.80 - Step 4: Simplify right side
165,000.80x = 22,542,677,062.08 - Step 5: Solve for x
x = 22,542,677,062.08/165,000.80 - Step 6: Final answer
x = 136,621.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.