Finding the Fourth Proportional to 107,107.77, 147,774.95 and 61,779.68
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Solution
The fourth proportional to 107,107.77, 147,774.95 and 61,779.68 is: 85,236.48
Step by Step Solution
- Step 1: Write the proportion equation
107,107.77 : 147,774.95 = 61,779.68 : x - Step 2: Convert to fraction form
107,107.77/147,774.95 = 61,779.68/x - Step 3: Cross multiply
107,107.77x = 147,774.95 × 61,779.68 - Step 4: Simplify right side
107,107.77x = 9,129,489,123.02 - Step 5: Solve for x
x = 9,129,489,123.02/107,107.77 - Step 6: Final answer
x = 85,236.48
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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.