Finding the Fourth Proportional to 153,682,738.50, 212,083,861.80 and 84,068,120.06
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Solution
The fourth proportional to 153,682,738.50, 212,083,861.80 and 84,068,120.06 is: 116,014,926.15
Step by Step Solution
- Step 1: Write the proportion equation
153,682,738.50 : 212,083,861.80 = 84,068,120.06 : x - Step 2: Convert to fraction form
153,682,738.50/212,083,861.80 = 84,068,120.06/x - Step 3: Cross multiply
153,682,738.50x = 212,083,861.80 × 84,068,120.06 - Step 4: Simplify right side
153,682,738.50x = 17,829,491,556,590,850 - Step 5: Solve for x
x = 17,829,491,556,590,850/153,682,738.50 - Step 6: Final answer
x = 116,014,926.15
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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.