Finding the Fourth Proportional to 159,018.24, 219,447.36 and 87,405.12
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Solution
The fourth proportional to 159,018.24, 219,447.36 and 87,405.12 is: 120,620.27
Step by Step Solution
- Step 1: Write the proportion equation
159,018.24 : 219,447.36 = 87,405.12 : x - Step 2: Convert to fraction form
159,018.24/219,447.36 = 87,405.12/x - Step 3: Cross multiply
159,018.24x = 219,447.36 × 87,405.12 - Step 4: Simplify right side
159,018.24x = 19,180,822,834.48 - Step 5: Solve for x
x = 19,180,822,834.48/159,018.24 - Step 6: Final answer
x = 120,620.27
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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.