Finding the Fourth Proportional to 126,110.44, 174,113.46 and 78,428.68
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Solution
The fourth proportional to 126,110.44, 174,113.46 and 78,428.68 is: 108,281.99
Step by Step Solution
- Step 1: Write the proportion equation
126,110.44 : 174,113.46 = 78,428.68 : x - Step 2: Convert to fraction form
126,110.44/174,113.46 = 78,428.68/x - Step 3: Cross multiply
126,110.44x = 174,113.46 × 78,428.68 - Step 4: Simplify right side
126,110.44x = 13,655,488,838.03 - Step 5: Solve for x
x = 13,655,488,838.03/126,110.44 - Step 6: Final answer
x = 108,281.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.