Finding the Fourth Proportional to 113,813.70, 170,720.55 and 107,981.70
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Solution
The fourth proportional to 113,813.70, 170,720.55 and 107,981.70 is: 161,972.55
Step by Step Solution
- Step 1: Write the proportion equation
113,813.70 : 170,720.55 = 107,981.70 : x - Step 2: Convert to fraction form
113,813.70/170,720.55 = 107,981.70/x - Step 3: Cross multiply
113,813.70x = 170,720.55 × 107,981.70 - Step 4: Simplify right side
113,813.70x = 18,434,695,213.94 - Step 5: Solve for x
x = 18,434,695,213.94/113,813.70 - Step 6: Final answer
x = 161,972.55
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1.5x scale
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.