Finding the Fourth Proportional to 122,685.80, 184,028.70 and 39,579.80
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Solution
The fourth proportional to 122,685.80, 184,028.70 and 39,579.80 is: 59,369.70
Step by Step Solution
- Step 1: Write the proportion equation
122,685.80 : 184,028.70 = 39,579.80 : x - Step 2: Convert to fraction form
122,685.80/184,028.70 = 39,579.80/x - Step 3: Cross multiply
122,685.80x = 184,028.70 × 39,579.80 - Step 4: Simplify right side
122,685.80x = 7,283,819,140.26 - Step 5: Solve for x
x = 7,283,819,140.26/122,685.80 - Step 6: Final answer
x = 59,369.70
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1.5x scale
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.