Finding the Fourth Proportional to 129,542,138.41, 178,767,716.82 and 70,804,769.53
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Solution
The fourth proportional to 129,542,138.41, 178,767,716.82 and 70,804,769.53 is: 97,710,344.64
Step by Step Solution
- Step 1: Write the proportion equation
129,542,138.41 : 178,767,716.82 = 70,804,769.53 : x - Step 2: Convert to fraction form
129,542,138.41/178,767,716.82 = 70,804,769.53/x - Step 3: Cross multiply
129,542,138.41x = 178,767,716.82 × 70,804,769.53 - Step 4: Simplify right side
129,542,138.41x = 12,657,606,988,844,404 - Step 5: Solve for x
x = 12,657,606,988,844,404/129,542,138.41 - Step 6: Final answer
x = 97,710,344.64
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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.