Finding the Fourth Proportional to 122,355.12, 183,295.44 and 71,631.12
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Solution
The fourth proportional to 122,355.12, 183,295.44 and 71,631.12 is: 107,307.79
Step by Step Solution
- Step 1: Write the proportion equation
122,355.12 : 183,295.44 = 71,631.12 : x - Step 2: Convert to fraction form
122,355.12/183,295.44 = 71,631.12/x - Step 3: Cross multiply
122,355.12x = 183,295.44 × 71,631.12 - Step 4: Simplify right side
122,355.12x = 13,129,657,658.09 - Step 5: Solve for x
x = 13,129,657,658.09/122,355.12 - Step 6: Final answer
x = 107,307.79
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1.5x scale
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.