Finding the Fourth Proportional to 107,289.09, 148,024.67 and 61,961.09
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Solution
The fourth proportional to 107,289.09, 148,024.67 and 61,961.09 is: 85,486.50
Step by Step Solution
- Step 1: Write the proportion equation
107,289.09 : 148,024.67 = 61,961.09 : x - Step 2: Convert to fraction form
107,289.09/148,024.67 = 61,961.09/x - Step 3: Cross multiply
107,289.09x = 148,024.67 × 61,961.09 - Step 4: Simplify right side
107,289.09x = 9,171,768,850.16 - Step 5: Solve for x
x = 9,171,768,850.16/107,289.09 - Step 6: Final answer
x = 85,486.50
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1.5x scale
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.