Finding the Fourth Proportional to 122,357.79, 168,860.70 and 68,647.50
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Solution
The fourth proportional to 122,357.79, 168,860.70 and 68,647.50 is: 94,737.45
Step by Step Solution
- Step 1: Write the proportion equation
122,357.79 : 168,860.70 = 68,647.50 : x - Step 2: Convert to fraction form
122,357.79/168,860.70 = 68,647.50/x - Step 3: Cross multiply
122,357.79x = 168,860.70 × 68,647.50 - Step 4: Simplify right side
122,357.79x = 11,591,864,903.25 - Step 5: Solve for x
x = 11,591,864,903.25/122,357.79 - Step 6: Final answer
x = 94,737.45
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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.