Finding the Fourth Proportional to 138,903.80, 208,327.61 and 39,068.60
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Solution
The fourth proportional to 138,903.80, 208,327.61 and 39,068.60 is: 58,594.99
Step by Step Solution
- Step 1: Write the proportion equation
138,903.80 : 208,327.61 = 39,068.60 : x - Step 2: Convert to fraction form
138,903.80/208,327.61 = 39,068.60/x - Step 3: Cross multiply
138,903.80x = 208,327.61 × 39,068.60 - Step 4: Simplify right side
138,903.80x = 8,139,067,120.08 - Step 5: Solve for x
x = 8,139,067,120.08/138,903.80 - Step 6: Final answer
x = 58,594.99
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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.