Finding the Fourth Proportional to 128,704,624.40, 193,056,936.60 and 106,029,808.40
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Solution
The fourth proportional to 128,704,624.40, 193,056,936.60 and 106,029,808.40 is: 159,044,712.60
Step by Step Solution
- Step 1: Write the proportion equation
128,704,624.40 : 193,056,936.60 = 106,029,808.40 : x - Step 2: Convert to fraction form
128,704,624.40/193,056,936.60 = 106,029,808.40/x - Step 3: Cross multiply
128,704,624.40x = 193,056,936.60 × 106,029,808.40 - Step 4: Simplify right side
128,704,624.40x = 20,469,789,997,988,948 - Step 5: Solve for x
x = 20,469,789,997,988,948/128,704,624.40 - Step 6: Final answer
x = 159,044,712.60
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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.