Finding the Fourth Proportional to 129,446,961.60, 194,170,442.40 and 115,338,187.20
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Solution
The fourth proportional to 129,446,961.60, 194,170,442.40 and 115,338,187.20 is: 173,007,280.80
Step by Step Solution
- Step 1: Write the proportion equation
129,446,961.60 : 194,170,442.40 = 115,338,187.20 : x - Step 2: Convert to fraction form
129,446,961.60/194,170,442.40 = 115,338,187.20/x - Step 3: Cross multiply
129,446,961.60x = 194,170,442.40 × 115,338,187.20 - Step 4: Simplify right side
129,446,961.60x = 22,395,266,834,238,020 - Step 5: Solve for x
x = 22,395,266,834,238,020/129,446,961.60 - Step 6: Final answer
x = 173,007,280.80
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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.