Finding the Fourth Proportional to 89,137.67, 122,750.74 and 83,439.21
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Solution
The fourth proportional to 89,137.67, 122,750.74 and 83,439.21 is: 114,903.45
Step by Step Solution
- Step 1: Write the proportion equation
89,137.67 : 122,750.74 = 83,439.21 : x - Step 2: Convert to fraction form
89,137.67/122,750.74 = 83,439.21/x - Step 3: Cross multiply
89,137.67x = 122,750.74 × 83,439.21 - Step 4: Simplify right side
89,137.67x = 10,242,225,337.13 - Step 5: Solve for x
x = 10,242,225,337.13/89,137.67 - Step 6: Final answer
x = 114,903.45
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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.