Finding the Fourth Proportional to 165,790.99, 248,515.17 and 76,972.06
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Solution
The fourth proportional to 165,790.99, 248,515.17 and 76,972.06 is: 115,378.55
Step by Step Solution
- Step 1: Write the proportion equation
165,790.99 : 248,515.17 = 76,972.06 : x - Step 2: Convert to fraction form
165,790.99/248,515.17 = 76,972.06/x - Step 3: Cross multiply
165,790.99x = 248,515.17 × 76,972.06 - Step 4: Simplify right side
165,790.99x = 19,128,724,576.15 - Step 5: Solve for x
x = 19,128,724,576.15/165,790.99 - Step 6: Final answer
x = 115,378.55
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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.