Finding the Fourth Proportional to 120,854.36, 166,775.28 and 67,137.98
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Solution
The fourth proportional to 120,854.36, 166,775.28 and 67,137.98 is: 92,648.34
Step by Step Solution
- Step 1: Write the proportion equation
120,854.36 : 166,775.28 = 67,137.98 : x - Step 2: Convert to fraction form
120,854.36/166,775.28 = 67,137.98/x - Step 3: Cross multiply
120,854.36x = 166,775.28 × 67,137.98 - Step 4: Simplify right side
120,854.36x = 11,196,955,413.13 - Step 5: Solve for x
x = 11,196,955,413.13/120,854.36 - Step 6: Final answer
x = 92,648.34
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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.