Finding the Fourth Proportional to 131,037.52, 180,830.28 and 74,447.68
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Solution
The fourth proportional to 131,037.52, 180,830.28 and 74,447.68 is: 102,736.95
Step by Step Solution
- Step 1: Write the proportion equation
131,037.52 : 180,830.28 = 74,447.68 : x - Step 2: Convert to fraction form
131,037.52/180,830.28 = 74,447.68/x - Step 3: Cross multiply
131,037.52x = 180,830.28 × 74,447.68 - Step 4: Simplify right side
131,037.52x = 13,462,394,819.75 - Step 5: Solve for x
x = 13,462,394,819.75/131,037.52 - Step 6: Final answer
x = 102,736.95
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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.