Finding the Fourth Proportional to 122,558.70, 183,838.19 and 38,319.30
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Solution
The fourth proportional to 122,558.70, 183,838.19 and 38,319.30 is: 57,478.99
Step by Step Solution
- Step 1: Write the proportion equation
122,558.70 : 183,838.19 = 38,319.30 : x - Step 2: Convert to fraction form
122,558.70/183,838.19 = 38,319.30/x - Step 3: Cross multiply
122,558.70x = 183,838.19 × 38,319.30 - Step 4: Simplify right side
122,558.70x = 7,044,550,754.07 - Step 5: Solve for x
x = 7,044,550,754.07/122,558.70 - Step 6: Final answer
x = 57,478.99
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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.