Finding the Fourth Proportional to 113,811.08, 170,435.82 and 84,890.60
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Solution
The fourth proportional to 113,811.08, 170,435.82 and 84,890.60 is: 127,126.45
Step by Step Solution
- Step 1: Write the proportion equation
113,811.08 : 170,435.82 = 84,890.60 : x - Step 2: Convert to fraction form
113,811.08/170,435.82 = 84,890.60/x - Step 3: Cross multiply
113,811.08x = 170,435.82 × 84,890.60 - Step 4: Simplify right side
113,811.08x = 14,468,399,021.29 - Step 5: Solve for x
x = 14,468,399,021.29/113,811.08 - Step 6: Final answer
x = 127,126.45
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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.