Finding the Fourth Proportional to 113,814.99, 157,037.12 and 72,960.45
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Solution
The fourth proportional to 113,814.99, 157,037.12 and 72,960.45 is: 100,667.75
Step by Step Solution
- Step 1: Write the proportion equation
113,814.99 : 157,037.12 = 72,960.45 : x - Step 2: Convert to fraction form
113,814.99/157,037.12 = 72,960.45/x - Step 3: Cross multiply
113,814.99x = 157,037.12 × 72,960.45 - Step 4: Simplify right side
113,814.99x = 11,457,498,577.10 - Step 5: Solve for x
x = 11,457,498,577.10/113,814.99 - Step 6: Final answer
x = 100,667.75
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1.5x scale
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.