Finding the Fourth Proportional to 112,683.09, 168,775.48 and 77,059.99
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Solution
The fourth proportional to 112,683.09, 168,775.48 and 77,059.99 is: 115,419.60
Step by Step Solution
- Step 1: Write the proportion equation
112,683.09 : 168,775.48 = 77,059.99 : x - Step 2: Convert to fraction form
112,683.09/168,775.48 = 77,059.99/x - Step 3: Cross multiply
112,683.09x = 168,775.48 × 77,059.99 - Step 4: Simplify right side
112,683.09x = 13,005,836,801.05 - Step 5: Solve for x
x = 13,005,836,801.05/112,683.09 - Step 6: Final answer
x = 115,419.60
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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.