Finding the Fourth Proportional to 154,273,588.12, 212,903,689.80 and 84,661,460.20
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Solution
The fourth proportional to 154,273,588.12, 212,903,689.80 and 84,661,460.20 is: 116,836,183.56
Step by Step Solution
- Step 1: Write the proportion equation
154,273,588.12 : 212,903,689.80 = 84,661,460.20 : x - Step 2: Convert to fraction form
154,273,588.12/212,903,689.80 = 84,661,460.20/x - Step 3: Cross multiply
154,273,588.12x = 212,903,689.80 × 84,661,460.20 - Step 4: Simplify right side
154,273,588.12x = 18,024,737,260,435,848 - Step 5: Solve for x
x = 18,024,737,260,435,848/154,273,588.12 - Step 6: Final answer
x = 116,836,183.56
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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.