Finding the Fourth Proportional to 129,377,537.28, 178,476,546.96 and 77,129,757.36
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Solution
The fourth proportional to 129,377,537.28, 178,476,546.96 and 77,129,757.36 is: 106,400,639.95
Step by Step Solution
- Step 1: Write the proportion equation
129,377,537.28 : 178,476,546.96 = 77,129,757.36 : x - Step 2: Convert to fraction form
129,377,537.28/178,476,546.96 = 77,129,757.36/x - Step 3: Cross multiply
129,377,537.28x = 178,476,546.96 × 77,129,757.36 - Step 4: Simplify right side
129,377,537.28x = 13,765,852,761,475,446 - Step 5: Solve for x
x = 13,765,852,761,475,446/129,377,537.28 - Step 6: Final answer
x = 106,400,639.95
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.