Finding the Fourth Proportional to 106,457.80, 159,686.70 and 71,206.60
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Solution
The fourth proportional to 106,457.80, 159,686.70 and 71,206.60 is: 106,809.90
Step by Step Solution
- Step 1: Write the proportion equation
106,457.80 : 159,686.70 = 71,206.60 : x - Step 2: Convert to fraction form
106,457.80/159,686.70 = 71,206.60/x - Step 3: Cross multiply
106,457.80x = 159,686.70 × 71,206.60 - Step 4: Simplify right side
106,457.80x = 11,370,746,972.22 - Step 5: Solve for x
x = 11,370,746,972.22/106,457.80 - Step 6: Final answer
x = 106,809.90
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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.