Finding the Fourth Proportional to 122,305.15, 168,624.87 and 79,208.49
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Solution
The fourth proportional to 122,305.15, 168,624.87 and 79,208.49 is: 109,206.53
Step by Step Solution
- Step 1: Write the proportion equation
122,305.15 : 168,624.87 = 79,208.49 : x - Step 2: Convert to fraction form
122,305.15/168,624.87 = 79,208.49/x - Step 3: Cross multiply
122,305.15x = 168,624.87 × 79,208.49 - Step 4: Simplify right side
122,305.15x = 13,356,521,664.46 - Step 5: Solve for x
x = 13,356,521,664.46/122,305.15 - Step 6: Final answer
x = 109,206.53
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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.