Finding the Fourth Proportional to 159,752.21, 220,457.79 and 87,155.10
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Solution
The fourth proportional to 159,752.21, 220,457.79 and 87,155.10 is: 120,273.90
Step by Step Solution
- Step 1: Write the proportion equation
159,752.21 : 220,457.79 = 87,155.10 : x - Step 2: Convert to fraction form
159,752.21/220,457.79 = 87,155.10/x - Step 3: Cross multiply
159,752.21x = 220,457.79 × 87,155.10 - Step 4: Simplify right side
159,752.21x = 19,214,020,733.23 - Step 5: Solve for x
x = 19,214,020,733.23/159,752.21 - Step 6: Final answer
x = 120,273.90
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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.