Finding the Fourth Proportional to 122,409.10, 183,721.65 and 72,426.70
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Solution
The fourth proportional to 122,409.10, 183,721.65 and 72,426.70 is: 108,703.95
Step by Step Solution
- Step 1: Write the proportion equation
122,409.10 : 183,721.65 = 72,426.70 : x - Step 2: Convert to fraction form
122,409.10/183,721.65 = 72,426.70/x - Step 3: Cross multiply
122,409.10x = 183,721.65 × 72,426.70 - Step 4: Simplify right side
122,409.10x = 13,306,352,828.06 - Step 5: Solve for x
x = 13,306,352,828.06/122,409.10 - Step 6: Final answer
x = 108,703.95
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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.