Finding the Fourth Proportional to 113,815.99, 157,038.49 and 72,961.45
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Solution
The fourth proportional to 113,815.99, 157,038.49 and 72,961.45 is: 100,669.12
Step by Step Solution
- Step 1: Write the proportion equation
113,815.99 : 157,038.49 = 72,961.45 : x - Step 2: Convert to fraction form
113,815.99/157,038.49 = 72,961.45/x - Step 3: Cross multiply
113,815.99x = 157,038.49 × 72,961.45 - Step 4: Simplify right side
113,815.99x = 11,457,755,936.21 - Step 5: Solve for x
x = 11,457,755,936.21/113,815.99 - Step 6: Final answer
x = 100,669.12
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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.