Finding the Fourth Proportional to 129,373,840.17, 178,551,555.39 and 73,632,813.75
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Solution
The fourth proportional to 129,373,840.17, 178,551,555.39 and 73,632,813.75 is: 101,622,193.52
Step by Step Solution
- Step 1: Write the proportion equation
129,373,840.17 : 178,551,555.39 = 73,632,813.75 : x - Step 2: Convert to fraction form
129,373,840.17/178,551,555.39 = 73,632,813.75/x - Step 3: Cross multiply
129,373,840.17x = 178,551,555.39 × 73,632,813.75 - Step 4: Simplify right side
129,373,840.17x = 13,147,253,422,804,678 - Step 5: Solve for x
x = 13,147,253,422,804,678/129,373,840.17 - Step 6: Final answer
x = 101,622,193.52
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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.