Finding the Fourth Proportional to 113,142.86, 156,119.79 and 65,386.99
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Solution
The fourth proportional to 113,142.86, 156,119.79 and 65,386.99 is: 90,224.01
Step by Step Solution
- Step 1: Write the proportion equation
113,142.86 : 156,119.79 = 65,386.99 : x - Step 2: Convert to fraction form
113,142.86/156,119.79 = 65,386.99/x - Step 3: Cross multiply
113,142.86x = 156,119.79 × 65,386.99 - Step 4: Simplify right side
113,142.86x = 10,208,202,366.93 - Step 5: Solve for x
x = 10,208,202,366.93/113,142.86 - Step 6: Final answer
x = 90,224.01
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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.