Finding the Fourth Proportional to 122,911.80, 184,367.70 and 39,805.80
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Solution
The fourth proportional to 122,911.80, 184,367.70 and 39,805.80 is: 59,708.70
Step by Step Solution
- Step 1: Write the proportion equation
122,911.80 : 184,367.70 = 39,805.80 : x - Step 2: Convert to fraction form
122,911.80/184,367.70 = 39,805.80/x - Step 3: Cross multiply
122,911.80x = 184,367.70 × 39,805.80 - Step 4: Simplify right side
122,911.80x = 7,338,903,792.66 - Step 5: Solve for x
x = 7,338,903,792.66/122,911.80 - Step 6: Final answer
x = 59,708.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.