Finding the Fourth Proportional to 122,421.20, 183,631.80 and 122,421.20
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Solution
The fourth proportional to 122,421.20, 183,631.80 and 122,421.20 is: 183,631.80
Step by Step Solution
- Step 1: Write the proportion equation
122,421.20 : 183,631.80 = 122,421.20 : x - Step 2: Convert to fraction form
122,421.20/183,631.80 = 122,421.20/x - Step 3: Cross multiply
122,421.20x = 183,631.80 × 122,421.20 - Step 4: Simplify right side
122,421.20x = 22,480,425,314.16 - Step 5: Solve for x
x = 22,480,425,314.16/122,421.20 - Step 6: Final answer
x = 183,631.80
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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.