Finding the Fourth Proportional to 122,981.80, 184,472.70 and 109,203.70
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Solution
The fourth proportional to 122,981.80, 184,472.70 and 109,203.70 is: 163,805.55
Step by Step Solution
- Step 1: Write the proportion equation
122,981.80 : 184,472.70 = 109,203.70 : x - Step 2: Convert to fraction form
122,981.80/184,472.70 = 109,203.70/x - Step 3: Cross multiply
122,981.80x = 184,472.70 × 109,203.70 - Step 4: Simplify right side
122,981.80x = 20,145,101,388.99 - Step 5: Solve for x
x = 20,145,101,388.99/122,981.80 - Step 6: Final answer
x = 163,805.55
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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.