Finding the Fourth Proportional to 122,715.21, 169,430.88 and 93,984.11
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Solution
The fourth proportional to 122,715.21, 169,430.88 and 93,984.11 is: 129,762.32
Step by Step Solution
- Step 1: Write the proportion equation
122,715.21 : 169,430.88 = 93,984.11 : x - Step 2: Convert to fraction form
122,715.21/169,430.88 = 93,984.11/x - Step 3: Cross multiply
122,715.21x = 169,430.88 × 93,984.11 - Step 4: Simplify right side
122,715.21x = 15,923,810,463.32 - Step 5: Solve for x
x = 15,923,810,463.32/122,715.21 - Step 6: Final answer
x = 129,762.32
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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.