Finding the Fourth Proportional to 135,886,474.10, 187,525,491.54 and 77,147,940.62
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Solution
The fourth proportional to 135,886,474.10, 187,525,491.54 and 77,147,940.62 is: 106,465,382.83
Step by Step Solution
- Step 1: Write the proportion equation
135,886,474.10 : 187,525,491.54 = 77,147,940.62 : x - Step 2: Convert to fraction form
135,886,474.10/187,525,491.54 = 77,147,940.62/x - Step 3: Cross multiply
135,886,474.10x = 187,525,491.54 × 77,147,940.62 - Step 4: Simplify right side
135,886,474.10x = 14,467,205,486,064,232 - Step 5: Solve for x
x = 14,467,205,486,064,232/135,886,474.10 - Step 6: Final answer
x = 106,465,382.83
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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.