Finding the Fourth Proportional to 143,395.80, 215,093.70 and 129,617.70
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Solution
The fourth proportional to 143,395.80, 215,093.70 and 129,617.70 is: 194,426.55
Step by Step Solution
- Step 1: Write the proportion equation
143,395.80 : 215,093.70 = 129,617.70 : x - Step 2: Convert to fraction form
143,395.80/215,093.70 = 129,617.70/x - Step 3: Cross multiply
143,395.80x = 215,093.70 × 129,617.70 - Step 4: Simplify right side
143,395.80x = 27,879,950,678.49 - Step 5: Solve for x
x = 27,879,950,678.49/143,395.80 - Step 6: Final answer
x = 194,426.55
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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.