Finding the Fourth Proportional to 143,179,564.46, 197,582,236.88 and 87,518,180.99
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Solution
The fourth proportional to 143,179,564.46, 197,582,236.88 and 87,518,180.99 is: 120,771,689.95
Step by Step Solution
- Step 1: Write the proportion equation
143,179,564.46 : 197,582,236.88 = 87,518,180.99 : x - Step 2: Convert to fraction form
143,179,564.46/197,582,236.88 = 87,518,180.99/x - Step 3: Cross multiply
143,179,564.46x = 197,582,236.88 × 87,518,180.99 - Step 4: Simplify right side
143,179,564.46x = 17,292,037,966,247,390 - Step 5: Solve for x
x = 17,292,037,966,247,390/143,179,564.46 - Step 6: Final answer
x = 120,771,689.95
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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.