Finding the Fourth Proportional to 120,268.13, 180,398.46 and 57,133.68
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Solution
The fourth proportional to 120,268.13, 180,398.46 and 57,133.68 is: 85,698.75
Step by Step Solution
- Step 1: Write the proportion equation
120,268.13 : 180,398.46 = 57,133.68 : x - Step 2: Convert to fraction form
120,268.13/180,398.46 = 57,133.68/x - Step 3: Cross multiply
120,268.13x = 180,398.46 × 57,133.68 - Step 4: Simplify right side
120,268.13x = 10,306,827,886.13 - Step 5: Solve for x
x = 10,306,827,886.13/120,268.13 - Step 6: Final answer
x = 85,698.75
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.