Finding the Fourth Proportional to 90,893.67, 136,128.87 and 87,740.75
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Solution
The fourth proportional to 90,893.67, 136,128.87 and 87,740.75 is: 131,406.82
Step by Step Solution
- Step 1: Write the proportion equation
90,893.67 : 136,128.87 = 87,740.75 : x - Step 2: Convert to fraction form
90,893.67/136,128.87 = 87,740.75/x - Step 3: Cross multiply
90,893.67x = 136,128.87 × 87,740.75 - Step 4: Simplify right side
90,893.67x = 11,944,048,469.81 - Step 5: Solve for x
x = 11,944,048,469.81/90,893.67 - Step 6: Final answer
x = 131,406.82
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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.