Finding the Fourth Proportional to 130,620,826.05, 180,256,769.49 and 71,883,491.18
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Solution
The fourth proportional to 130,620,826.05, 180,256,769.49 and 71,883,491.18 is: 99,199,234.08
Step by Step Solution
- Step 1: Write the proportion equation
130,620,826.05 : 180,256,769.49 = 71,883,491.18 : x - Step 2: Convert to fraction form
130,620,826.05/180,256,769.49 = 71,883,491.18/x - Step 3: Cross multiply
130,620,826.05x = 180,256,769.49 × 71,883,491.18 - Step 4: Simplify right side
130,620,826.05x = 12,957,485,898,868,424 - Step 5: Solve for x
x = 12,957,485,898,868,424/130,620,826.05 - Step 6: Final answer
x = 99,199,234.08
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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.