Finding the Fourth Proportional to 128,006,917.97, 176,650,011.81 and 69,269,576.67
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Solution
The fourth proportional to 128,006,917.97, 176,650,011.81 and 69,269,576.67 is: 95,592,267.44
Step by Step Solution
- Step 1: Write the proportion equation
128,006,917.97 : 176,650,011.81 = 69,269,576.67 : x - Step 2: Convert to fraction form
128,006,917.97/176,650,011.81 = 69,269,576.67/x - Step 3: Cross multiply
128,006,917.97x = 176,650,011.81 × 69,269,576.67 - Step 4: Simplify right side
128,006,917.97x = 12,236,471,536,829,200 - Step 5: Solve for x
x = 12,236,471,536,829,200/128,006,917.97 - Step 6: Final answer
x = 95,592,267.44
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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.