Finding the Fourth Proportional to 122,394.78, 168,921.62 and 68,682.98
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Solution
The fourth proportional to 122,394.78, 168,921.62 and 68,682.98 is: 94,791.95
Step by Step Solution
- Step 1: Write the proportion equation
122,394.78 : 168,921.62 = 68,682.98 : x - Step 2: Convert to fraction form
122,394.78/168,921.62 = 68,682.98/x - Step 3: Cross multiply
122,394.78x = 168,921.62 × 68,682.98 - Step 4: Simplify right side
122,394.78x = 11,602,040,248.03 - Step 5: Solve for x
x = 11,602,040,248.03/122,394.78 - Step 6: Final answer
x = 94,791.95
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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.