Finding the Fourth Proportional to 153,682,745.26, 212,083,871.15 and 84,068,126.83
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Solution
The fourth proportional to 153,682,745.26, 212,083,871.15 and 84,068,126.83 is: 116,014,935.49
Step by Step Solution
- Step 1: Write the proportion equation
153,682,745.26 : 212,083,871.15 = 84,068,126.83 : x - Step 2: Convert to fraction form
153,682,745.26/212,083,871.15 = 84,068,126.83/x - Step 3: Cross multiply
153,682,745.26x = 212,083,871.15 × 84,068,126.83 - Step 4: Simplify right side
153,682,745.26x = 17,829,493,777,245,420 - Step 5: Solve for x
x = 17,829,493,777,245,420/153,682,745.26 - Step 6: Final answer
x = 116,014,935.49
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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.