Finding the Fourth Proportional to 168,497,121.90, 252,745,682.85 and 139,775,688.30
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Solution
The fourth proportional to 168,497,121.90, 252,745,682.85 and 139,775,688.30 is: 209,663,532.45
Step by Step Solution
- Step 1: Write the proportion equation
168,497,121.90 : 252,745,682.85 = 139,775,688.30 : x - Step 2: Convert to fraction form
168,497,121.90/252,745,682.85 = 139,775,688.30/x - Step 3: Cross multiply
168,497,121.90x = 252,745,682.85 × 139,775,688.30 - Step 4: Simplify right side
168,497,121.90x = 35,327,701,785,212,256 - Step 5: Solve for x
x = 35,327,701,785,212,256/168,497,121.90 - Step 6: Final answer
x = 209,663,532.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.